diff --git a/README.md b/README.md
index 3973e6bf..5bdfac77 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,7 @@ Originally created for my contact page - [https://edent.tel/](https://edent.tel/
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/flickr.svg" width="125" title="flickr" /><br>252 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/facebook.svg" width="125" title="Facebook" /><br>270 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/tumblr.svg" width="125" title="tumblr" /><br>451 Bytes</td>
-<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/twitter.svg" width="125" title="Twitter" /><br>428 Bytes</td>
+<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/twitter.svg" width="125" title="Twitter" /><br>438 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/whatsapp.svg" width="125" title="WhatsApp" /><br>630 Bytes</td>
 </tr>
 <tr>
@@ -58,10 +58,10 @@ Originally created for my contact page - [https://edent.tel/](https://edent.tel/
 </tr>
 <tr>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/vk.svg" width="125" title="VK" /><br>597 Bytes</td>
-<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/rss.svg" width="125" title="RSS" /><br>310 Bytes</td>
+<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/rss.svg" width="125" title="RSS" /><br>305 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/mail.svg" width="125" title="mail" /><br>573 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/email.svg" width="125" title="email" /><br>379 Bytes</td>
-<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/mastodon.svg" width="125" title="Mastodon" /><br>567 Bytes</td>
+<td><img src="https://edent.github.io/SuperTinyIcons/images/svg/mastodon.svg" width="125" title="Mastodon" /><br>664 Bytes</td>
 <td><img src="https://edent.github.io/SuperTinyIcons/images/svg/wire.svg" width="125" title="Wire" /><br>286 Bytes</td>
 </tr>
 <tr>
@@ -148,7 +148,7 @@ Think you can make them smaller? Tell me by raising an issue!
 
 Want more icons?  Tell me by raising an issue!
 
-Think the icons look wrong?  Tell me by raising an issue!
+Think the icons look wrong?  [Compare them against the official logos](https://github.com/edent/SuperTinyIcons/blob/master/images/reference/index.md). If they still look wrong, tell me by raising an issue!
 
 **New!** Icons also available in [Android Vector Drawables](https://developer.android.com/guide/topics/graphics/vector-drawable-resources.html) so you can easily use them in Android apps. Converted using https://inloop.github.io/svg2android/ - not guaranteed to be under 1KB.
 
diff --git a/images/reference/amazon.jpg b/images/reference/amazon.jpg
new file mode 100644
index 00000000..417c5532
Binary files /dev/null and b/images/reference/amazon.jpg differ
diff --git a/images/reference/dropbox.svg b/images/reference/dropbox.svg
new file mode 100644
index 00000000..185f7c0a
--- /dev/null
+++ b/images/reference/dropbox.svg
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 21.1.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Layer_1"
+   x="0px"
+   y="0px"
+   width="512"
+   height="512"
+   viewBox="0 0 512 512.00001"
+   xml:space="preserve"
+   sodipodi:docname="dropbox.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata20"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs18" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview16"
+     showgrid="false"
+     inkscape:zoom="1.0802469"
+     inkscape:cx="162"
+     inkscape:cy="180.01429"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="Layer_1" /><style
+     type="text/css"
+     id="style2">
+	.st0{fill:#0061FF;}
+	.st1{display:none;}
+	.st2{display:inline;}
+	.st3{fill:none;}
+</style><path
+     class="st0"
+     d="m 256.34088,119.84949 -128.17044,81.811 128.17044,81.81088 L 128.17044,365.28226 0,282.7896 128.17044,200.97872 0,119.84949 128.17044,38.03861 Z m -128.8522,271.33963 128.17044,-81.811 128.17044,81.811 L 255.65912,473 Z M 256.34088,282.7896 384.51132,200.97872 256.34088,119.84949 383.82956,38.03861 512,119.84949 383.82956,201.66049 512,283.47137 383.82956,365.28226 Z"
+     id="path4"
+     inkscape:connector-curvature="0"
+     style="fill:#0061ff;stroke-width:6.81757689" /><g
+     id="Editble"
+     class="st1"
+     style="display:none"
+     transform="translate(0,448.2)"><g
+       class="st2"
+       id="g12"
+       style="display:inline"><rect
+         x="-105"
+         y="5"
+         class="st3"
+         width="506"
+         height="71.800003"
+         id="rect8"
+         style="fill:none" /><path
+         d="m 0.2,13.6 h 16.3 c 10.4,0 19,6.1 19,19.8 v 2.9 c 0,13.8 -8,20 -18.7,20 H 0.2 Z m 9.2,7.7 v 27.2 h 7 c 5.9,0 9.9,-3.9 9.9,-12.5 v -2.2 c 0,-8.6 -4.1,-12.5 -10.2,-12.5 z m 31,0.5 h 7.3 l 1.1,8 c 1.4,-5.5 4.9,-8.3 11.3,-8.3 h 2.2 v 9.2 h -3.7 c -7.4,0 -9.2,2.6 -9.2,9.9 v 15.8 h -9 c 0,0 0,-34.6 0,-34.6 z m 23.9,18 v -1 c 0,-11.6 7.4,-17.9 17.5,-17.9 10.3,0 17.5,6.4 17.5,17.9 v 1 c 0,11.4 -7,17.5 -17.5,17.5 -11.2,0 -17.5,-6.1 -17.5,-17.5 z m 25.8,-0.1 v -0.8 c 0,-6.5 -3.2,-10.3 -8.3,-10.3 -5,0 -8.4,3.5 -8.4,10.3 v 0.8 c 0,6.2 3.2,9.7 8.3,9.7 5.2,0 8.4,-3.4 8.4,-9.7 z M 104,21.8 h 7.6 l 0.9,6.6 c 1.9,-4.4 5.7,-7.4 11.4,-7.4 8.8,0 14.6,6.4 14.6,18 v 1 c 0,11.4 -6.4,17.3 -14.6,17.3 -5.5,0 -9.2,-2.5 -11,-6.5 V 68.3 H 104 Z m 25.3,18 V 39 c 0,-6.9 -3.5,-10.3 -8.3,-10.3 -5,0 -8.4,3.8 -8.4,10.3 v 0.7 c 0,6.1 3.2,10 8.2,10 5.2,-0.2 8.5,-3.6 8.5,-9.9 z m 22.4,10.3 -0.7,6.3 h -7.8 V 10.2 H 152 V 28 c 1.9,-4.5 5.8,-7 11.2,-7 8.2,0.1 14.3,5.8 14.3,17.3 v 1 c 0,11.5 -5.8,18 -14.6,18 -5.6,0 -9.4,-2.8 -11.2,-7.2 z m 16.8,-10.8 v -0.8 c 0,-6.4 -3.5,-9.8 -8.3,-9.8 -5,0 -8.4,4 -8.4,10 v 0.7 c 0,6.5 3.3,10.2 8.3,10.2 5.2,-0.1 8.4,-3.5 8.4,-10.3 z m 13.1,0.5 v -1 c 0,-11.6 7.4,-17.9 17.5,-17.9 10.3,0 17.5,6.4 17.5,17.9 v 1 c 0,11.4 -7.1,17.5 -17.5,17.5 -11.2,0 -17.5,-6.1 -17.5,-17.5 z m 25.8,-0.1 v -0.8 c 0,-6.5 -3.2,-10.3 -8.3,-10.3 -5,0 -8.4,3.5 -8.4,10.3 v 0.8 c 0,6.2 3.2,9.7 8.3,9.7 5.2,0 8.4,-3.4 8.4,-9.7 z m 20.9,-1.3 -12.1,-16.7 h 10.4 l 7,10.4 7.1,-10.4 H 251 l -12.3,16.6 13,18 h -10.2 l -8,-11.5 -7.7,11.5 h -10.6 z"
+         id="path10"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/facebook.svg b/images/reference/facebook.svg
new file mode 100644
index 00000000..cb6a7326
--- /dev/null
+++ b/images/reference/facebook.svg
@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="94.153999mm"
+   height="94.153999mm"
+   viewBox="0 0 94.153999 94.153999"
+   version="1.1"
+   id="svg88"
+   inkscape:version="0.92.1 r15371"
+   sodipodi:docname="facebook.svg">
+  <defs
+     id="defs82">
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath56">
+      <path
+         d="M 0,500 H 1024 V 0 H 0 Z"
+         id="path54"
+         inkscape:connector-curvature="0" />
+    </clipPath>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.98994949"
+     inkscape:cx="-12.556793"
+     inkscape:cy="166.60848"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata85">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(0,-202.846)">
+    <g
+       transform="matrix(0.35277777,0,0,-0.35277777,-43.586858,339.52831)"
+       id="g50">
+      <g
+         id="g52"
+         clip-path="url(#clipPath56)">
+        <g
+           id="g58"
+           transform="translate(375.7163,120.5527)">
+          <path
+             d="m 0,0 c 8.134,0 14.73,6.596 14.73,14.73 v 237.434 c 0,8.137 -6.596,14.731 -14.73,14.731 h -237.433 c -8.137,0 -14.73,-6.594 -14.73,-14.731 V 14.73 c 0,-8.134 6.593,-14.73 14.73,-14.73 z"
+             style="fill:#3c5a99;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path60"
+             inkscape:connector-curvature="0" />
+        </g>
+        <g
+           id="g62"
+           transform="translate(307.7046,120.5527)">
+          <path
+             d="m 0,0 v 103.355 h 34.693 l 5.194,40.28 H 0 v 25.717 c 0,11.662 3.238,19.609 19.962,19.609 l 21.33,0.01 v 36.026 c -3.69,0.49 -16.351,1.587 -31.081,1.587 -30.753,0 -51.806,-18.771 -51.806,-53.244 v -29.705 h -34.781 v -40.28 h 34.781 L -41.595,0 Z"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path64"
+             inkscape:connector-curvature="0" />
+        </g>
+      </g>
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/flickr.png b/images/reference/flickr.png
new file mode 100644
index 00000000..8c38c3e5
Binary files /dev/null and b/images/reference/flickr.png differ
diff --git a/images/reference/github.svg b/images/reference/github.svg
new file mode 100644
index 00000000..d17365b4
--- /dev/null
+++ b/images/reference/github.svg
@@ -0,0 +1,129 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="512mm"
+   height="500mm"
+   viewBox="0 0 512 500"
+   version="1.1"
+   id="svg749"
+   inkscape:version="0.92.1 r15371"
+   sodipodi:docname="github.svg">
+  <defs
+     id="defs743" />
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.35"
+     inkscape:cx="628.57143"
+     inkscape:cy="902.85714"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata746">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(0,203)">
+    <g
+       id="g26"
+       transform="matrix(4.2392528,0,0,-4.2392528,256,-202.35641)">
+      <path
+         d="m 0,0 c -33.347,0 -60.388,-27.035 -60.388,-60.388 0,-26.68 17.303,-49.316 41.297,-57.301 3.018,-0.559 4.126,1.31 4.126,2.905 0,1.439 -0.056,6.197 -0.082,11.243 -16.8,-3.653 -20.345,7.125 -20.345,7.125 -2.747,6.979 -6.705,8.836 -6.705,8.836 -5.479,3.748 0.413,3.671 0.413,3.671 6.064,-0.426 9.257,-6.224 9.257,-6.224 5.386,-9.231 14.127,-6.562 17.573,-5.019 0.543,3.902 2.107,6.567 3.834,8.075 -13.413,1.526 -27.513,6.705 -27.513,29.844 0,6.592 2.359,11.98 6.222,16.209 -0.627,1.521 -2.694,7.663 0.586,15.981 0,0 5.071,1.622 16.61,-6.191 4.817,1.338 9.983,2.009 15.115,2.033 5.132,-0.024 10.302,-0.695 15.128,-2.033 11.526,7.813 16.59,6.191 16.59,6.191 3.287,-8.318 1.22,-14.46 0.593,-15.981 3.872,-4.229 6.214,-9.617 6.214,-16.209 0,-23.195 -14.127,-28.301 -27.574,-29.796 2.166,-1.874 4.096,-5.549 4.096,-11.183 0,-8.08 -0.069,-14.583 -0.069,-16.572 0,-1.608 1.086,-3.49 4.147,-2.898 23.982,7.994 41.263,30.622 41.263,57.294 C 60.388,-27.035 33.351,0 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:evenodd;stroke:none"
+         id="path28"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g30"
+       transform="matrix(4.2392528,0,0,-4.2392528,96.961883,165.20048)">
+      <path
+         d="m 0,0 c -0.133,-0.301 -0.605,-0.391 -1.035,-0.185 -0.439,0.198 -0.684,0.607 -0.542,0.908 0.13,0.308 0.602,0.394 1.04,0.188 C -0.099,0.714 0.151,0.301 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path32"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g34"
+       transform="matrix(4.2392528,0,0,-4.2392528,107.33236,176.76723)">
+      <path
+         d="M 0,0 C -0.288,-0.267 -0.852,-0.143 -1.233,0.279 -1.629,0.7 -1.702,1.264 -1.41,1.534 -1.113,1.801 -0.567,1.676 -0.172,1.255 0.224,0.829 0.301,0.271 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path36"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g38"
+       transform="matrix(4.2392528,0,0,-4.2392528,117.42562,191.5093)">
+      <path
+         d="M 0,0 C -0.37,-0.258 -0.976,-0.017 -1.35,0.52 -1.72,1.058 -1.72,1.702 -1.341,1.96 -0.967,2.218 -0.37,1.985 0.009,1.453 0.378,0.907 0.378,0.263 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path40"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g42"
+       transform="matrix(4.2392528,0,0,-4.2392528,131.25277,205.75483)">
+      <path
+         d="M 0,0 C -0.331,-0.365 -1.036,-0.267 -1.552,0.232 -2.08,0.718 -2.227,1.409 -1.896,1.774 -1.56,2.14 -0.851,2.037 -0.331,1.543 0.193,1.057 0.352,0.361 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path44"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g46"
+       transform="matrix(4.2392528,0,0,-4.2392528,150.32941,214.0261)">
+      <path
+         d="m 0,0 c -0.147,-0.473 -0.825,-0.687 -1.509,-0.486 -0.683,0.207 -1.13,0.76 -0.992,1.238 0.142,0.476 0.824,0.7 1.513,0.485 C -0.306,1.031 0.142,0.481 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path48"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g50"
+       transform="matrix(4.2392528,0,0,-4.2392528,171.28151,215.55812)">
+      <path
+         d="m 0,0 c 0.017,-0.498 -0.563,-0.911 -1.281,-0.92 -0.722,-0.016 -1.307,0.387 -1.315,0.877 0,0.503 0.568,0.911 1.289,0.924 C -0.589,0.895 0,0.494 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path52"
+         inkscape:connector-curvature="0" />
+    </g>
+    <g
+       id="g54"
+       transform="matrix(4.2392528,0,0,-4.2392528,190.77611,212.24173)">
+      <path
+         d="m 0,0 c 0.086,-0.485 -0.413,-0.984 -1.126,-1.117 -0.701,-0.129 -1.35,0.172 -1.439,0.653 -0.087,0.498 0.42,0.997 1.121,1.126 C -0.73,0.786 -0.091,0.494 0,0"
+         style="fill:#1b1817;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path56"
+         inkscape:connector-curvature="0" />
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/gitlab.svg b/images/reference/gitlab.svg
new file mode 100644
index 00000000..e8d408fa
--- /dev/null
+++ b/images/reference/gitlab.svg
@@ -0,0 +1,53 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg width="500px" height="500px" viewBox="0 0 500 500" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns">
+    <!-- Generator: Sketch 3.2.2 (9983) - http://www.bohemiancoding.com/sketch -->
+    <title>logo-square</title>
+    <desc>Created with Sketch.</desc>
+    <defs></defs>
+    <g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
+        <g id="logo-square" sketch:type="MSArtboardGroup">
+            <g id="logo-no-bg" sketch:type="MSLayerGroup" transform="translate(2.000000, 19.000000)">
+                <g id="Page-1" sketch:type="MSShapeGroup">
+                    <g id="gitlab_logo">
+                        <g id="g10" transform="translate(248.000000, 228.833300) scale(1, -1) translate(-248.000000, -228.833300) translate(0.000000, 0.333300)">
+                            <g id="g16">
+                                <g id="g18-Clipped">
+                                    <g id="g18">
+                                        <g>
+                                            <g id="Group" transform="translate(0.666658, 0.666658)">
+                                                <g id="g44" transform="translate(0.532000, 0.774933)" fill="#FC6D26">
+                                                    <path d="M491.999988,194.666662 L464.441322,279.481326 L409.82399,447.578655 C407.014656,456.226655 394.778657,456.226655 391.96799,447.578655 L337.349325,279.481326 L155.982663,279.481326 L101.362664,447.578655 C98.5533309,456.226655 86.3173312,456.226655 83.5066646,447.578655 L28.8893326,279.481326 L1.33199997,194.666662 C-1.18266664,186.930662 1.57199996,178.455996 8.1519998,173.674662 L246.665327,0.385333324 L485.179988,173.674662 C491.759988,178.455996 494.513321,186.930662 491.999988,194.666662" id="path46"></path>
+                                                </g>
+                                                <g id="g48" transform="translate(156.197863, 1.160267)" fill="#E24329">
+                                                    <path d="M90.9999977,0 L90.9999977,0 L181.683995,279.095993 L0.31599997,279.095993 L90.9999977,0 L90.9999977,0 Z" id="path50"></path>
+                                                </g>
+                                                <g id="g56" transform="translate(28.531199, 1.160800)" fill="#FC6D26">
+                                                    <path d="M218.666661,0 L127.982663,279.09466 L0.890666644,279.09466 L218.666661,0 L218.666661,0 Z" id="path58"></path>
+                                                </g>
+                                                <g id="g64" transform="translate(0.088533, 0.255867)" fill="#FCA326">
+                                                    <path d="M29.3333326,279.999993 L29.3333326,279.999993 L1.77466662,195.185328 C-0.738666648,187.449329 2.01466662,178.974662 8.59599979,174.194662 L247.109327,0.905333311 L29.3333326,279.999993 L29.3333326,279.999993 Z" id="path66"></path>
+                                                </g>
+                                                <g id="g72" transform="translate(29.421866, 280.255593)" fill="#E24329">
+                                                    <path d="M0,0 L127.091997,0 L72.4733315,168.097329 C69.6626649,176.746662 57.4266652,176.746662 54.617332,168.097329 L0,0 L0,0 Z" id="path74"></path>
+                                                </g>
+                                                <g id="g76" transform="translate(247.197860, 1.160800)" fill="#FC6D26">
+                                                    <path d="M0,0 L90.6839977,279.09466 L217.775995,279.09466 L0,0 L0,0 Z" id="path78"></path>
+                                                </g>
+                                                <g id="g80" transform="translate(246.307061, 0.255867)" fill="#FCA326">
+                                                    <path d="M218.666661,279.999993 L218.666661,279.999993 L246.225327,195.185328 C248.73866,187.449329 245.985327,178.974662 239.403994,174.194662 L0.890666644,0.905333311 L218.666661,279.999993 L218.666661,279.999993 Z" id="path82"></path>
+                                                </g>
+                                                <g id="g84" transform="translate(336.973725, 280.255593)" fill="#E24329">
+                                                    <path d="M127.999997,0 L0.907999977,0 L55.5266653,168.097329 C58.3373319,176.746662 70.5733316,176.746662 73.3826648,168.097329 L127.999997,0 L127.999997,0 Z" id="path86"></path>
+                                                </g>
+                                            </g>
+                                        </g>
+                                    </g>
+                                </g>
+                            </g>
+                        </g>
+                    </g>
+                </g>
+            </g>
+        </g>
+    </g>
+</svg>
\ No newline at end of file
diff --git a/images/reference/google.svg b/images/reference/google.svg
new file mode 100644
index 00000000..1f3ee4ff
--- /dev/null
+++ b/images/reference/google.svg
@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<svg width="46px" height="46px" viewBox="0 0 46 46" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:sketch="http://www.bohemiancoding.com/sketch/ns">
+    <!-- Generator: Sketch 3.3.3 (12081) - http://www.bohemiancoding.com/sketch -->
+    <title>btn_google_light_focus_ios</title>
+    <desc>Created with Sketch.</desc>
+    <defs>
+        <filter x="-50%" y="-50%" width="200%" height="200%" filterUnits="objectBoundingBox" id="filter-1">
+            <feOffset dx="0" dy="1" in="SourceAlpha" result="shadowOffsetOuter1"></feOffset>
+            <feGaussianBlur stdDeviation="0.5" in="shadowOffsetOuter1" result="shadowBlurOuter1"></feGaussianBlur>
+            <feColorMatrix values="0 0 0 0 0   0 0 0 0 0   0 0 0 0 0  0 0 0 0.168 0" in="shadowBlurOuter1" type="matrix" result="shadowMatrixOuter1"></feColorMatrix>
+            <feOffset dx="0" dy="0" in="SourceAlpha" result="shadowOffsetOuter2"></feOffset>
+            <feGaussianBlur stdDeviation="0.5" in="shadowOffsetOuter2" result="shadowBlurOuter2"></feGaussianBlur>
+            <feColorMatrix values="0 0 0 0 0   0 0 0 0 0   0 0 0 0 0  0 0 0 0.084 0" in="shadowBlurOuter2" type="matrix" result="shadowMatrixOuter2"></feColorMatrix>
+            <feMerge>
+                <feMergeNode in="shadowMatrixOuter1"></feMergeNode>
+                <feMergeNode in="shadowMatrixOuter2"></feMergeNode>
+                <feMergeNode in="SourceGraphic"></feMergeNode>
+            </feMerge>
+        </filter>
+        <rect id="path-2" x="0" y="0" width="40" height="40" rx="2"></rect>
+    </defs>
+    <g id="Google-Button" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd" sketch:type="MSPage">
+        <g id="9-PATCH" sketch:type="MSArtboardGroup" transform="translate(-668.000000, -160.000000)"></g>
+        <g id="btn_google_light_focus" sketch:type="MSArtboardGroup" transform="translate(-1.000000, -1.000000)">
+            <rect id="Rectangle-14" fill-opacity="0.3" fill="#4285F4" sketch:type="MSShapeGroup" x="1" y="1" width="46" height="46"></rect>
+            <g id="button" sketch:type="MSLayerGroup" transform="translate(4.000000, 4.000000)" filter="url(#filter-1)">
+                <g id="button-bg">
+                    <use fill="#FFFFFF" fill-rule="evenodd" sketch:type="MSShapeGroup" xlink:href="#path-2"></use>
+                    <use fill="none" xlink:href="#path-2"></use>
+                    <use fill="none" xlink:href="#path-2"></use>
+                    <use fill="none" xlink:href="#path-2"></use>
+                </g>
+            </g>
+            <g id="logo_googleg_48dp" sketch:type="MSLayerGroup" transform="translate(15.000000, 15.000000)">
+                <path d="M17.64,9.20454545 C17.64,8.56636364 17.5827273,7.95272727 17.4763636,7.36363636 L9,7.36363636 L9,10.845 L13.8436364,10.845 C13.635,11.97 13.0009091,12.9231818 12.0477273,13.5613636 L12.0477273,15.8195455 L14.9563636,15.8195455 C16.6581818,14.2527273 17.64,11.9454545 17.64,9.20454545 L17.64,9.20454545 Z" id="Shape" fill="#4285F4" sketch:type="MSShapeGroup"></path>
+                <path d="M9,18 C11.43,18 13.4672727,17.1940909 14.9563636,15.8195455 L12.0477273,13.5613636 C11.2418182,14.1013636 10.2109091,14.4204545 9,14.4204545 C6.65590909,14.4204545 4.67181818,12.8372727 3.96409091,10.71 L0.957272727,10.71 L0.957272727,13.0418182 C2.43818182,15.9831818 5.48181818,18 9,18 L9,18 Z" id="Shape" fill="#34A853" sketch:type="MSShapeGroup"></path>
+                <path d="M3.96409091,10.71 C3.78409091,10.17 3.68181818,9.59318182 3.68181818,9 C3.68181818,8.40681818 3.78409091,7.83 3.96409091,7.29 L3.96409091,4.95818182 L0.957272727,4.95818182 C0.347727273,6.17318182 0,7.54772727 0,9 C0,10.4522727 0.347727273,11.8268182 0.957272727,13.0418182 L3.96409091,10.71 L3.96409091,10.71 Z" id="Shape" fill="#FBBC05" sketch:type="MSShapeGroup"></path>
+                <path d="M9,3.57954545 C10.3213636,3.57954545 11.5077273,4.03363636 12.4404545,4.92545455 L15.0218182,2.34409091 C13.4631818,0.891818182 11.4259091,0 9,0 C5.48181818,0 2.43818182,2.01681818 0.957272727,4.95818182 L3.96409091,7.29 C4.67181818,5.16272727 6.65590909,3.57954545 9,3.57954545 L9,3.57954545 Z" id="Shape" fill="#EA4335" sketch:type="MSShapeGroup"></path>
+                <path d="M0,0 L18,0 L18,18 L0,18 L0,0 Z" id="Shape" sketch:type="MSShapeGroup"></path>
+            </g>
+            <g id="handles_square" sketch:type="MSLayerGroup"></g>
+        </g>
+    </g>
+</svg>
\ No newline at end of file
diff --git a/images/reference/google_plus.png b/images/reference/google_plus.png
new file mode 100644
index 00000000..e098e829
Binary files /dev/null and b/images/reference/google_plus.png differ
diff --git a/images/reference/hackernews.png b/images/reference/hackernews.png
new file mode 100644
index 00000000..5963ec10
Binary files /dev/null and b/images/reference/hackernews.png differ
diff --git a/images/reference/html5.svg b/images/reference/html5.svg
new file mode 100644
index 00000000..872e08fb
--- /dev/null
+++ b/images/reference/html5.svg
@@ -0,0 +1,7 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512">
+  <title>HTML5 Logo Badge</title>
+  <path fill="#E34F26" d="M71,460 L30,0 481,0 440,460 255,512"/>
+  <path fill="#EF652A" d="M256,472 L405,431 440,37 256,37"/>
+  <path fill="#EBEBEB" d="M256,208 L181,208 176,150 256,150 256,94 255,94 114,94 115,109 129,265 256,265zM256,355 L255,355 192,338 188,293 158,293 132,293 139,382 255,414 256,414z"/>
+  <path fill="#FFF" d="M255,208 L255,265 325,265 318,338 255,355 255,414 371,382 372,372 385,223 387,208 371,208zM255,94 L255,129 255,150 255,150 392,150 392,150 392,150 393,138 396,109 397,94z"/>
+</svg>
diff --git a/images/reference/index.md b/images/reference/index.md
new file mode 100644
index 00000000..c2ec3340
--- /dev/null
+++ b/images/reference/index.md
@@ -0,0 +1,59 @@
+# Reference Images
+
+A visual guide to check if the Super Tiny Icons match the shape and colour of organisation's official SVG logo. 
+Where possible this links to the organisation's brand guidelines page.
+
+| Super Tiny SVG	| Official Logo | Source	|
+|-----|---------------|----------|
+| <img src="/images/svg/twitter.svg" width="256" />	| <img src="/images/reference/twitter.svg" width="256" />	| https://about.twitter.com/en_us/company/brand-resources.html	|
+| <img src="/images/svg/hackernews.svg" width="256" />	| <img src="/images/reference/hackernews.png" width="256" />	| https://www.ycombinator.com/favicon.ico	|
+| <img src="/images/svg/flickr.svg" width="256" />	| <img src="/images/reference/flickr.png" width="256" />	| https://www.flickr.com/images/opensearch-flickr-logo.png	|
+| <img src="/images/svg/facebook.svg" width="256" />	| <img src="/images/reference/facebook.svg" width="256" />	| https://en.facebookbrand.com/	|
+| <img src="/images/svg/tumblr.svg" width="256" />	| <img src="/images/reference/tumblr.svg" width="256" />	| https://www.tumblr.com/logo	|
+| <img src="/images/svg/whatsapp.svg" width="256" />	| <img src="/images/reference/whatsapp.svg" width="256" />	| https://www.whatsappbrand.com/	|
+| <img src="/images/svg/dropbox.svg" width="256" />	| <img src="/images/reference/dropbox.svg" width="256" />	| https://www.dropbox.com/branding	|
+| <img src="/images/svg/telegram.svg" width="256" />	| <img src="/images/reference/telegram.png" width="256" />	| https://telegram.org/img/t_logo.png	|
+| <img src="/images/svg/linkedin.svg" width="256" />	| <img src="/images/reference/linkedin.svg" width="256" />	| https://brand.linkedin.com/	|
+| <img src="/images/svg/stackoverflow.svg" width="256" />	| <img src="/images/reference/stackoverflow.svg" width="256" />	| https://stackoverflow.com/company/logos	|
+| <img src="/images/svg/instagram.svg" width="256" />	| <img src="/images/reference/instagram.svg" width="256" />	| https://en.instagram-brand.com/	|
+| <img src="/images/svg/wordpress.svg" width="256" />	| <img src="/images/reference/wordpress.svg" width="256" />	| https://wordpress.org/about/logos/	|
+| <img src="/images/svg/skype.svg" width="256" />	| <img src="/images/reference/skype.svg" width="256" />	| https://www.skype.com/en/legal/brand-guidelines/	|
+| <img src="/images/svg/reddit.svg" width="256" />	| <img src="/images/reference/reddit.svg" width="256" />	| https://web.archive.org/web/20160306165444/https://www.reddit.com/about/alien/	|
+| <img src="/images/svg/pinterest.svg" width="256" />	| <img src="/images/reference/pinterest.svg" width="256" />	| https://business.pinterest.com/en-gb/brand-guidelines	|
+| <img src="/images/svg/paypal.svg" width="256" />	| <img src="/images/reference/paypal.png" width="256" />	| https://www.paypal-marketing.com/html/partner/na/pdf/PayPal_Cobranding_guidelines_dec_2013.pdf	|
+| <img src="/images/svg/github.svg" width="256" />	| <img src="/images/reference/github.svg" width="256" />	| https://github.com/logos	|
+| <img src="/images/svg/wikipedia.svg" width="256" />	| <img src="/images/reference/wikipedia.svg" width="256" />	| https://wikimediafoundation.org/wiki/Visual_identity_guidelines	|
+| <img src="/images/svg/vimeo.svg" width="256" />	| <img src="/images/reference/vimeo.svg" width="256" />	| https://press.vimeo.com/brand-guidelines	|
+| <img src="/images/svg/slideshare.svg" width="256" />	| <img src="/images/reference/slideshare.png" width="256" />	| https://www.slideshare.net/about/logos	|
+| <img src="/images/svg/soundcloud.svg" width="256" />	| <img src="/images/reference/soundcloud.png" width="256" />	| https://developers.soundcloud.com/docs/api/buttons-logos	|
+| <img src="/images/svg/spotify.svg" width="256" />	| <img src="/images/reference/spotify.svg" width="256" />	| https://developer.spotify.com/design/	|
+| <img src="/images/svg/snapchat.svg" width="256" />	| <img src="/images/reference/snapchat.svg" width="256" />	| https://www.snap.com/en-US/brand-guidelines/	|
+| <img src="/images/svg/amazon.svg" width="256" />	| <img src="/images/reference/amazon.jpg" width="256" />	| http://www.turnerduckworth.com/work/amazon/	|
+| <img src="/images/svg/steam.svg" width="256" />	| <img src="/images/reference/steam.svg" width="256" />	| https://steamcdn-a.akamaihd.net/steamcommunity/public/images/steamworks_docs/english/Steam_Guidelines_20170524.pdf	|
+| <img src="/images/svg/google.svg" width="256" />	| <img src="/images/reference/google.svg" width="256" />	| https://developers.google.com/identity/branding-guidelines|
+| <img src="/images/svg/google_plus.svg" width="256" />	| <img src="/images/reference/google_plus.png" width="256" />	| https://plus.google.com/+googleplus	|
+| <img src="/images/svg/wechat.svg" width="256" />	| <img src="/images/reference/wechat.svg" width="256" />	| https://wechat.design/?locale=en_US	|
+| <img src="/images/svg/youtube.svg" width="256" />	| <img src="/images/reference/youtube.svg" width="256" />	| https://www.youtube.com/intl/en/yt/about/brand-resources/#logos-icons-colors	|
+| <img src="/images/svg/pdf.svg" width="256" />	| <img src="/images/reference/pdf.svg" width="256" />	| https://www.adobe.com/content/dam/acom/en/legal/documents/Adobe_Trademark_Guidelines_11012014.pdf	|
+| <img src="/images/svg/vk.svg" width="256" />	| <img src="/images/reference/vk.png" width="256" />	| https://vk.com/public47200950	|
+| <img src="/images/svg/rss.svg" width="256" />	| <img src="/images/reference/rss.svg" width="256" />	| http://www.feedicons.com/	|
+| <img src="/images/svg/mastodon.svg" width="256" />	| <img src="/images/reference/mastodon.svg" width="256" />	| https://github.com/tootsuite/joinmastodon/blob/master/public/press-kit.zip	|
+| <img src="/images/svg/wire.svg" width="256" />	| <img src="/images/reference/wire.svg" width="256" />	| https://brand.wire.com/symbol/|
+| <img src="/images/svg/tox.svg" width="256" />	| <img src="/images/reference/tox.svg" width="256" />	| https://github.com/Tox/tox.chat/blob/master/themes/website/static/img/icon.svg	|
+| <img src="/images/svg/gitlab.svg" width="256" />	| <img src="/images/reference/gitlab.svg" width="256" />	| https://about.gitlab.com/press/	|
+| <img src="/images/svg/html5.svg" width="256" />	| <img src="/images/reference/html5.svg" width="256" />	| https://www.w3.org/html/logo/	|
+| <img src="/images/svg/meetup.svg" width="256" />	| <img src="/images/reference/meetup.jpeg" width="256" />	| https://a248.e.akamai.net/secure.meetupstatic.com/photos/event/8/f/1/d/highres_454596637.jpeg	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+| <img src="/images/svg/.svg" width="256" />	| <img src="/images/reference/" width="256" />	| https	|
+
+
diff --git a/images/reference/instagram.svg b/images/reference/instagram.svg
new file mode 100644
index 00000000..94f8cad4
--- /dev/null
+++ b/images/reference/instagram.svg
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="671.78668"
+   height="671.78668"
+   viewBox="0 0 671.78668 671.78668"
+   sodipodi:docname="instagram.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="640"
+     inkscape:window-height="480"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="0.35130199"
+     inkscape:cx="335.89334"
+     inkscape:cy="335.89334"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="ink_ext_XXXXXX"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,671.78667)"><g
+       id="g12"
+       transform="scale(0.1)"><path
+         d="m 2519.21,5038.41 c -684.18,0 -769.97,-2.9 -1038.67,-15.16 C 1212.4,5011.02 1029.27,4968.43 869.027,4906.16 703.367,4841.78 562.879,4755.64 422.824,4615.59 282.773,4475.54 196.633,4335.04 132.254,4169.38 69.9805,4009.14 27.3945,3826.01 15.1563,3557.87 2.89844,3289.17 0,3203.38 0,2519.2 0,1835.03 2.89844,1749.24 15.1563,1480.54 27.3945,1212.4 69.9805,1029.27 132.254,869.031 196.633,703.371 282.773,562.879 422.824,422.82 562.879,282.77 703.367,196.629 869.027,132.25 1029.27,69.9805 1212.4,27.3906 1480.54,15.1602 1749.24,2.90234 1835.03,0 2519.21,0 c 684.17,0 769.96,2.90234 1038.66,15.1602 268.14,12.2304 451.27,54.8203 611.51,117.0898 165.66,64.379 306.15,150.52 446.21,290.57 140.05,140.059 226.19,280.551 290.57,446.211 62.27,160.239 104.86,343.369 117.09,611.509 12.26,268.7 15.16,354.49 15.16,1038.66 0,684.18 -2.9,769.97 -15.16,1038.67 -12.23,268.14 -54.82,451.27 -117.09,611.51 -64.38,165.66 -150.52,306.16 -290.57,446.21 -140.06,140.05 -280.55,226.19 -446.21,290.57 -160.24,62.27 -343.37,104.86 -611.51,117.09 -268.7,12.26 -354.49,15.16 -1038.66,15.16 z m 0,-453.91 c 672.65,0 752.33,-2.57 1017.97,-14.69 245.62,-11.2 379.01,-52.24 467.78,-86.74 117.59,-45.7 201.51,-100.29 289.66,-188.44 88.16,-88.16 142.75,-172.08 188.45,-289.67 34.5,-88.77 75.54,-222.16 86.74,-467.78 12.12,-265.64 14.69,-345.32 14.69,-1017.98 0,-672.65 -2.57,-752.33 -14.69,-1017.97 -11.2,-245.62 -52.24,-379.01 -86.74,-467.78 -45.7,-117.591 -100.29,-201.509 -188.45,-289.661 -88.15,-88.16 -172.07,-142.75 -289.66,-188.449 -88.77,-34.5 -222.16,-75.539 -467.78,-86.738 -265.6,-12.122 -345.27,-14.692 -1017.97,-14.692 -672.71,0 -752.37,2.57 -1017.98,14.692 -245.62,11.199 -379.01,52.238 -467.78,86.738 -117.591,45.699 -201.509,100.289 -289.661,188.449 -88.152,88.152 -142.75,172.07 -188.449,289.661 -34.5,88.77 -75.535,222.16 -86.742,467.78 -12.121,265.64 -14.688,345.32 -14.688,1017.97 0,672.66 2.567,752.34 14.688,1017.98 11.207,245.62 52.242,379.01 86.742,467.78 45.699,117.59 100.293,201.51 188.445,289.66 88.156,88.16 172.074,142.75 289.665,188.45 88.77,34.5 222.16,75.54 467.78,86.74 265.64,12.12 345.32,14.69 1017.98,14.69"
+         style="fill:#100f0d;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path14"
+         inkscape:connector-curvature="0" /><path
+         d="m 2519.21,1679.47 c -463.78,0 -839.74,375.96 -839.74,839.73 0,463.78 375.96,839.74 839.74,839.74 463.77,0 839.73,-375.96 839.73,-839.74 0,-463.77 -375.96,-839.73 -839.73,-839.73 z m 0,2133.38 c -714.47,0 -1293.65,-579.18 -1293.65,-1293.65 0,-714.46 579.18,-1293.64 1293.65,-1293.64 714.46,0 1293.64,579.18 1293.64,1293.64 0,714.47 -579.18,1293.65 -1293.64,1293.65"
+         style="fill:#100f0d;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path16"
+         inkscape:connector-curvature="0" /><path
+         d="m 4166.27,3863.96 c 0,-166.96 -135.35,-302.3 -302.31,-302.3 -166.95,0 -302.3,135.34 -302.3,302.3 0,166.96 135.35,302.31 302.3,302.31 166.96,0 302.31,-135.35 302.31,-302.31"
+         style="fill:#100f0d;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path18"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/linkedin.svg b/images/reference/linkedin.svg
new file mode 100644
index 00000000..3d16e48d
--- /dev/null
+++ b/images/reference/linkedin.svg
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="512"
+   height="512"
+   viewBox="0 0 512 512"
+   sodipodi:docname="linkedin.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="1.2291667"
+     inkscape:cx="103.64"
+     inkscape:cy="323.79661"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="ink_ext_XXXXXX"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,512)"><g
+       id="g30"
+       transform="scale(2.6665927)"><path
+         d="M 133.344,144 H 10.6289 C 4.76484,144 0,139.352 0,133.623 V 10.3891 C 0,4.65508 4.76484,0 10.6289,0 H 133.344 c 5.875,0 10.66,4.65508 10.66,10.3891 V 133.623 c 0,5.729 -4.785,10.377 -10.66,10.377"
+         style="fill:#0977b6;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.1"
+         id="path14"
+         inkscape:connector-curvature="0" /></g><path
+       inkscape:connector-curvature="0"
+       id="path16"
+       style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.26665926"
+       d="m 85.422697,331.12148 c 18.206693,0 33.006283,-14.79692 33.006283,-33.00975 0,-18.23149 -14.79959,-33.02948 -33.006283,-33.02948 -18.254693,0 -33.028417,14.79799 -33.028417,33.02948 0,18.21283 14.773724,33.00975 33.028417,33.00975 M 56.930688,240.03201 H 113.88751 V 56.779758 H 56.930688 V 240.03201" /><path
+       inkscape:connector-curvature="0"
+       id="path18"
+       style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none;stroke-width:0.26665926"
+       d="m 149.61265,240.03201 h 54.62328 v -25.04117 h 0.76372 c 7.60272,14.40893 26.18247,29.59704 53.88997,29.59704 57.67493,0 68.32264,-37.95494 68.32264,-87.28904 V 56.779758 H 270.2965 v 89.118332 c 0,21.24927 -0.39199,48.58292 -29.59598,48.58292 -29.63251,0 -34.18225,-23.1463 -34.18225,-47.04643 V 56.779758 H 149.61265 V 240.03201" /></g></svg>
\ No newline at end of file
diff --git a/images/reference/mastodon.svg b/images/reference/mastodon.svg
new file mode 100644
index 00000000..4b72b3ac
--- /dev/null
+++ b/images/reference/mastodon.svg
@@ -0,0 +1 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="61.076954mm" height="65.47831mm" viewBox="0 0 216.4144 232.00976"><path d="M211.80734 139.0875c-3.18125 16.36625-28.4925 34.2775-57.5625 37.74875-15.15875 1.80875-30.08375 3.47125-45.99875 2.74125-26.0275-1.1925-46.565-6.2125-46.565-6.2125 0 2.53375.15625 4.94625.46875 7.2025 3.38375 25.68625 25.47 27.225 46.39125 27.9425 21.11625.7225 39.91875-5.20625 39.91875-5.20625l.8675 19.09s-14.77 7.93125-41.08125 9.39c-14.50875.7975-32.52375-.365-53.50625-5.91875C9.23234 213.82 1.40609 165.31125.20859 116.09125c-.365-14.61375-.14-28.39375-.14-39.91875 0-50.33 32.97625-65.0825 32.97625-65.0825C49.67234 3.45375 78.20359.2425 107.86484 0h.72875c29.66125.2425 58.21125 3.45375 74.8375 11.09 0 0 32.975 14.7525 32.975 65.0825 0 0 .41375 37.13375-4.59875 62.915" fill="#3088d4"/><path d="M177.50984 80.077v60.94125h-24.14375v-59.15c0-12.46875-5.24625-18.7975-15.74-18.7975-11.6025 0-17.4175 7.5075-17.4175 22.3525v32.37625H96.20734V85.42325c0-14.845-5.81625-22.3525-17.41875-22.3525-10.49375 0-15.74 6.32875-15.74 18.7975v59.15H38.90484V80.077c0-12.455 3.17125-22.3525 9.54125-29.675 6.56875-7.3225 15.17125-11.07625 25.85-11.07625 12.355 0 21.71125 4.74875 27.8975 14.2475l6.01375 10.08125 6.015-10.08125c6.185-9.49875 15.54125-14.2475 27.8975-14.2475 10.6775 0 19.28 3.75375 25.85 11.07625 6.36875 7.3225 9.54 17.22 9.54 29.675" fill="#fff"/></svg>
diff --git a/images/reference/meetup.jpeg b/images/reference/meetup.jpeg
new file mode 100644
index 00000000..c9c8de3a
Binary files /dev/null and b/images/reference/meetup.jpeg differ
diff --git a/images/reference/paypal.png b/images/reference/paypal.png
new file mode 100644
index 00000000..4187ab3f
Binary files /dev/null and b/images/reference/paypal.png differ
diff --git a/images/reference/pdf.svg b/images/reference/pdf.svg
new file mode 100644
index 00000000..047c2ed2
--- /dev/null
+++ b/images/reference/pdf.svg
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="9.4160595mm"
+   height="9.2712812mm"
+   viewBox="0 0 9.4160595 9.2712812"
+   version="1.1"
+   id="svg1341"
+   inkscape:version="0.92.1 r15371"
+   sodipodi:docname="pdf.svg">
+  <defs
+     id="defs1335">
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath749">
+      <path
+         d="m 489.472,315.691 h 38.4 v 37.647 h -38.4 z"
+         id="path747"
+         inkscape:connector-curvature="0" />
+    </clipPath>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="1.979899"
+     inkscape:cx="98.834998"
+     inkscape:cy="69.724282"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata1338">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(-2.8724795e-6,-287.72872)">
+    <g
+       transform="matrix(0.35277777,0,0,-0.35277777,-175.03191,410.62772)"
+       id="g743">
+      <g
+         id="g745"
+         clip-path="url(#clipPath749)">
+        <g
+           id="g751"
+           transform="translate(512.5085,332.0229)">
+          <path
+             d="m 0,0 c -2.855,-0.532 -4.784,-1.263 -7.567,-2.359 0.819,1.607 2.379,5.699 3.136,8.402 C -3.382,3.945 -2.108,1.884 0,0 m -4.072,8.694 c -0.499,1.752 -1.186,5.655 -0.075,6.92 2.178,-1.244 0.828,-4.196 0.075,-6.92 m 1.279,6.2 c -0.287,1.016 -0.979,1.526 -1.56,1.451 -0.712,-0.092 -1.456,-0.507 -1.752,-1.169 -0.841,-1.885 0.915,-7.459 1.182,-8.389 -1.705,-5.153 -7.56,-15.365 -10.429,-16.055 -0.054,0.677 0.3,2.623 4.085,5.059 0.195,0.203 0.417,0.466 0.522,0.625 -3.189,-1.554 -7.342,-4.061 -4.847,-5.933 0.141,-0.105 0.35,-0.202 0.578,-0.287 1.911,-0.708 4.571,1.606 7.255,6.842 2.961,0.973 5.347,1.716 8.709,2.213 3.697,-2.498 6.162,-3.01 7.843,-2.373 0.463,0.174 1.206,0.757 1.407,1.535 -1.362,-1.676 -4.554,-0.512 -7.103,1.088 2.352,0.248 4.787,0.41 5.834,0.075 1.33,-0.425 1.295,-1.078 1.269,-1.163 0.11,0.357 0.256,0.944 -0.032,1.412 -1.124,1.824 -6.287,0.762 -8.16,0.566 -2.961,1.789 -4.993,4.967 -5.815,7.263 0.781,2.961 1.613,5.117 1.014,7.24"
+             style="fill:#ed1c24;fill-opacity:1;fill-rule:evenodd;stroke:none"
+             id="path753"
+             inkscape:connector-curvature="0" />
+        </g>
+      </g>
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/pinterest.svg b/images/reference/pinterest.svg
new file mode 100644
index 00000000..078896cf
--- /dev/null
+++ b/images/reference/pinterest.svg
@@ -0,0 +1,66 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="325.31332"
+   height="325.31201"
+   viewBox="0 0 325.31332 325.31201"
+   sodipodi:docname="pintrest.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6"><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath18"><path
+         d="M 0,243.984 H 243.985 V 0 H 0 Z"
+         id="path16"
+         inkscape:connector-curvature="0" /></clipPath></defs><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="640"
+     inkscape:window-height="480"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="0.72545738"
+     inkscape:cx="162.65666"
+     inkscape:cy="162.65601"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="badgeRGB"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,325.312)"><g
+       id="g12"><g
+         id="g14"
+         clip-path="url(#clipPath18)"><g
+           id="g20"
+           transform="translate(243.984,121.9921)"><path
+             d="m 0,0 c 0,-67.375 -54.618,-121.992 -121.992,-121.992 -67.374,0 -121.992,54.617 -121.992,121.992 0,67.375 54.618,121.992 121.992,121.992 C -54.618,121.992 0,67.375 0,0"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path22"
+             inkscape:connector-curvature="0" /></g><g
+           id="g24"
+           transform="translate(121.9919,243.9842)"><path
+             d="m 0,0 c -67.374,0 -121.992,-54.618 -121.992,-121.992 0,-51.681 32.155,-95.863 77.535,-113.638 -1.066,9.652 -2.029,24.496 0.424,35.033 2.216,9.52 14.304,60.638 14.304,60.638 0,0 -3.649,7.308 -3.649,18.112 0,16.963 9.832,29.627 22.074,29.627 10.408,0 15.435,-7.815 15.435,-17.185 0,-10.466 -6.664,-26.115 -10.103,-40.617 -2.874,-12.143 6.089,-22.045 18.065,-22.045 21.682,0 38.349,22.862 38.349,55.864 0,29.208 -20.988,49.631 -50.957,49.631 -34.71,0 -55.085,-26.035 -55.085,-52.942 0,-10.484 4.039,-21.728 9.079,-27.839 0.997,-1.208 1.143,-2.267 0.847,-3.499 -0.927,-3.854 -2.985,-12.14 -3.389,-13.835 -0.532,-2.233 -1.768,-2.706 -4.08,-1.632 -15.236,7.093 -24.762,29.368 -24.762,47.261 0,38.482 27.96,73.822 80.605,73.822 42.319,0 75.206,-30.155 75.206,-70.456 0,-42.044 -26.509,-75.88 -63.303,-75.88 -12.361,0 -23.983,6.422 -27.961,14.008 0,0 -6.117,-23.292 -7.6,-28.999 -2.754,-10.597 -10.189,-23.879 -15.162,-31.981 11.414,-3.534 23.544,-5.441 36.12,-5.441 67.375,0 121.993,54.618 121.993,121.993 C 121.993,-54.618 67.375,0 0,0"
+             style="fill:#bd081c;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path26"
+             inkscape:connector-curvature="0" /></g></g></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/reddit.svg b/images/reference/reddit.svg
new file mode 100644
index 00000000..5b5ea743
--- /dev/null
+++ b/images/reference/reddit.svg
@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg29"
+   xml:space="preserve"
+   width="38.400002"
+   height="53.333332"
+   viewBox="0 0 38.400002 53.333332"
+   sodipodi:docname="reddit.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata35"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs33" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview31"
+     showgrid="false"
+     inkscape:zoom="7.3981049"
+     inkscape:cx="18.1282"
+     inkscape:cy="18.682693"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g37" /><g
+     id="g37"
+     inkscape:groupmode="layer"
+     inkscape:label="ink_ext_XXXXXX"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,53.333333)"><g
+       id="g39"
+       transform="scale(0.1)"><path
+         d="m 282.492,281.926 c 0,15.023 -12.183,27.207 -27.207,27.207 -8.449,0 -16,-3.856 -20.988,-9.903 -22.504,15.805 -54.625,25.7 -90.285,25.7 -35.664,0 -67.7776,-9.891 -90.2776,-25.696 -4.9922,6.043 -12.5391,9.899 -20.9883,9.899 -15.0313,0 -27.20704,-12.184 -27.20704,-27.207 0,-11.297 6.88284,-20.988 16.68754,-25.102 -0.9453,-4.015 -1.4375,-8.129 -1.4375,-12.316 0,-30.793 26.5234,-57.543 65.4726,-71.055 -0.4375,-2.437 -0.8437,-4.91 -1.2109,-7.414 -17.9258,-6.898 -30.9102,-27.156 -30.9102,-51.078 0,-26.754 16.2383,-48.9258 37.4649,-52.9532 3.1015,-10.3359 6.9023,-19.6875 11.2615,-27.7734 -3.91,1.4726 -8.2654,2.2969 -12.8592,2.2969 -16.9101,0 -30.6015,-11.1094 -30.6015,-24.7969 0,-2.16409 0.4414,-4.21096 1.0859,-6.19534 H 226.719 c 0.621,1.98438 1.074,4.03125 1.074,6.19534 0,13.6875 -13.699,24.7969 -30.621,24.7969 -4.188,0 -8.18,-0.6836 -11.817,-1.918 4.278,7.9961 8.008,17.2148 11.063,27.3945 21.234,4.0195 37.473,26.1953 37.473,52.9532 0,23.926 -12.985,44.184 -30.914,51.078 -0.368,2.508 -0.77,4.981 -1.211,7.414 38.949,13.516 65.476,40.262 65.476,71.055 0,4.187 -0.492,8.301 -1.437,12.316 9.8,4.117 16.687,13.805 16.687,25.102"
+         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path41"
+         inkscape:connector-curvature="0" /><path
+         d="m 241.637,351.57 c 11.859,0 21.457,9.602 21.457,21.446 0,11.843 -9.598,21.445 -21.457,21.445 -11.84,0 -21.438,-9.602 -21.438,-21.445 0,-11.844 9.598,-21.446 21.438,-21.446"
+         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path43"
+         inkscape:connector-curvature="0" /><path
+         d="m 100.594,280.141 c -10.9885,0 -19.9338,-8.946 -19.9338,-19.938 0,-10.992 8.9453,-19.933 19.9338,-19.933 10.996,0 19.941,8.941 19.941,19.933 0,10.992 -8.945,19.938 -19.941,19.938"
+         style="fill:#ef381f;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path45"
+         inkscape:connector-curvature="0" /><path
+         d="m 187.414,280.152 c -10.996,0 -19.941,-8.949 -19.941,-19.949 0,-10.996 8.945,-19.941 19.941,-19.941 11.004,0 19.953,8.945 19.953,19.941 0,11 -8.949,19.949 -19.953,19.949"
+         style="fill:#ef381f;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path47"
+         inkscape:connector-curvature="0" /><path
+         d="m 144.012,189.148 c 21.465,0 36.777,4.715 46.492,14.418 2.164,2.161 2.168,5.668 0.008,7.832 -2.164,2.161 -5.668,2.165 -7.832,0.004 -7.535,-7.519 -20.289,-11.179 -38.668,-11.179 -18.383,0 -31.133,3.656 -38.653,11.175 -2.164,2.165 -5.6676,2.165 -7.8317,0 -2.164,-2.16 -2.164,-5.668 0,-7.832 9.7027,-9.703 25.0117,-14.418 46.4847,-14.418"
+         style="fill:#100f0d;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path49"
+         inkscape:connector-curvature="0" /><path
+         d="m 269.07,265.234 c -4.629,12.657 -13.496,24.403 -26.144,34.469 3.508,2.449 7.765,3.891 12.359,3.891 11.949,0 21.668,-9.723 21.668,-21.668 0,-6.715 -3.074,-12.715 -7.883,-16.692 z M 144.012,169.621 c -64.8948,0 -117.6839,33.594 -117.6839,74.887 0,41.289 52.7891,74.883 117.6839,74.883 64.894,0 117.691,-33.594 117.691,-74.883 0,-41.293 -52.797,-74.887 -117.691,-74.887 z m 84.34,-54.66 c 0,-19.9649 -9.895,-37.1133 -23.938,-44.3672 4.348,17.746 6.754,37.6092 6.754,58.3672 0,9.254 -0.469,18.246 -1.34,26.918 11.106,-8.469 18.524,-23.637 18.524,-40.918 z m -31.18,-83.9688 c 13.832,0 25.082,-8.6367 25.082,-19.2578 0,-0.2188 -0.008,-0.4375 -0.02,-0.6602 h -46.921 c 4.984,5.1485 9.574,11.5 13.683,18.8438 2.567,0.6836 5.313,1.0742 8.176,1.0742 z M 64.9648,11.0742 c -0.0117,0.2227 -0.0195,0.4414 -0.0195,0.6602 0,10.6211 11.2422,19.2578 25.0625,19.2578 3.2344,0 6.3242,-0.4727 9.168,-1.3359 4.0702,-7.2344 8.6092,-13.4961 13.5312,-18.5821 z m -5.289,103.8868 c 0,17.281 7.4219,32.445 18.5234,40.918 -0.8672,-8.676 -1.3359,-17.664 -1.3359,-26.918 0,-20.758 2.4062,-40.6212 6.75,-58.3633 -14.043,7.2539 -23.9375,24.3984 -23.9375,44.3633 z m 137.6212,51.215 c 1.808,-11.789 2.797,-24.301 2.797,-37.215 0,-54.6446 -17.746,-103.7891 -42.375,-117.8868 H 130.301 C 105.68,25.168 87.9375,74.3125 87.9375,128.961 c 0,12.91 0.9883,25.426 2.793,37.211 16.5195,-4.984 34.5975,-7.625 53.2815,-7.625 18.683,0 36.765,2.641 53.285,7.629 z M 11.0742,281.926 c 0,11.945 9.7227,21.668 21.6719,21.668 4.5898,0 8.8477,-1.442 12.3555,-3.887 -12.6485,-10.07 -21.5157,-21.812 -26.1407,-34.473 -4.8086,3.977 -7.8867,9.977 -7.8867,16.692 z m 230.5628,107 c 8.777,0 15.918,-7.137 15.918,-15.91 0,-8.77 -7.141,-15.907 -15.918,-15.907 -8.766,0 -15.899,7.137 -15.899,15.907 0,8.773 7.133,15.91 15.899,15.91 z m 46.394,-107 c 0,18.054 -14.691,32.742 -32.746,32.742 -8.332,0 -15.937,-3.137 -21.719,-8.281 -22.211,14.312 -50.937,22.679 -81.687,23.906 l 16.879,53.363 45.91,-10.804 c 0.09,-14.805 12.152,-26.821 26.969,-26.821 14.883,0 26.996,12.106 26.996,26.985 0,14.879 -12.113,26.984 -26.996,26.984 -11.078,0 -20.614,-6.715 -24.762,-16.289 l -50.578,11.902 c -2.82,0.664 -5.676,-0.957 -6.551,-3.718 l -19.449,-61.489 c -32.309,-0.605 -62.629,-9.062 -85.8322,-24.015 -5.7851,5.144 -13.3906,8.277 -21.7187,8.277 C 14.6875,314.668 0,299.98 0,281.926 0,269.988 6.42188,259.531 15.9883,253.813 15.5039,250.742 15.25,247.641 15.25,244.508 c 0,-23.414 13.7109,-45.258 38.6016,-61.504 7.9218,-5.172 16.6992,-9.563 26.1054,-13.152 -18.3593,-8.754 -31.3554,-30.059 -31.3554,-54.891 0,-28.0547 16.582,-51.5938 38.7461,-57.6329 1.7304,-5.3984 3.6523,-10.5429 5.7539,-15.3828 -1.0235,0.0742 -2.0508,0.125 -3.0938,0.125 -19.9258,0 -36.1367,-13.6094 -36.1367,-30.3359 0,-2.50393 0.4414,-5.08987 1.3555,-7.90237 C 55.9648,1.54688 58.0938,0 60.4922,0 H 226.723 c 2.422,0 4.562,1.57422 5.285,3.89063 0.902,2.89453 1.32,5.38671 1.32,7.84377 0,16.7265 -16.219,30.3359 -36.156,30.3359 -0.746,0 -1.484,-0.0195 -2.219,-0.0586 2.09,4.8242 4,9.9414 5.723,15.3164 22.168,6.0352 38.754,29.5782 38.754,57.6329 0,24.836 -12.996,46.141 -31.36,54.891 9.403,3.589 18.18,7.984 26.102,13.152 24.894,16.246 38.609,38.09 38.609,61.504 0,3.133 -0.254,6.234 -0.738,9.305 9.566,5.718 15.988,16.175 15.988,28.113"
+         style="fill:#100f0d;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path51"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/rss.svg b/images/reference/rss.svg
new file mode 100755
index 00000000..b3251494
--- /dev/null
+++ b/images/reference/rss.svg
@@ -0,0 +1,18 @@
+<?xml version="1.0"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd"> 
+<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="128px" height="128px" id="RSSicon" viewBox="0 0 256 256">
+<defs>
+<linearGradient x1="0.085" y1="0.085" x2="0.915" y2="0.915" id="RSSg">
+<stop  offset="0.0" stop-color="#E3702D"/><stop  offset="0.1071" stop-color="#EA7D31"/>
+<stop  offset="0.3503" stop-color="#F69537"/><stop  offset="0.5" stop-color="#FB9E3A"/>
+<stop  offset="0.7016" stop-color="#EA7C31"/><stop  offset="0.8866" stop-color="#DE642B"/>
+<stop  offset="1.0" stop-color="#D95B29"/>
+</linearGradient>
+</defs>
+<rect width="256" height="256" rx="55" ry="55" x="0"  y="0"  fill="#CC5D15"/>
+<rect width="246" height="246" rx="50" ry="50" x="5"  y="5"  fill="#F49C52"/>
+<rect width="236" height="236" rx="47" ry="47" x="10" y="10" fill="url(#RSSg)"/>
+<circle cx="68" cy="189" r="24" fill="#FFF"/>
+<path d="M160 213h-34a82 82 0 0 0 -82 -82v-34a116 116 0 0 1 116 116z" fill="#FFF"/>
+<path d="M184 213A140 140 0 0 0 44 73 V 38a175 175 0 0 1 175 175z" fill="#FFF"/>
+</svg>
diff --git a/images/reference/skype.svg b/images/reference/skype.svg
new file mode 100644
index 00000000..f0efa3a0
--- /dev/null
+++ b/images/reference/skype.svg
@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="400mm"
+   height="403mm"
+   viewBox="0 0 400 403"
+   version="1.1"
+   id="svg179"
+   inkscape:version="0.92.1 r15371"
+   sodipodi:docname="skype.svg">
+  <defs
+     id="defs173">
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath85">
+      <path
+         d="M 0,0 H 1224 V 792 H 0 Z"
+         id="path83"
+         inkscape:connector-curvature="0" />
+    </clipPath>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.35"
+     inkscape:cx="400"
+     inkscape:cy="674.28571"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata176">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(0,106)">
+    <g
+       transform="matrix(6.6222973,0,0,-6.6222973,-4442.0344,2368.195)"
+       id="g79">
+      <g
+         id="g81"
+         clip-path="url(#clipPath85)">
+        <g
+           id="g87"
+           transform="translate(728.9514,338.1728)">
+          <path
+             d="m 0,0 c 0.281,1.611 0.428,3.269 0.428,4.963 0,15.778 -12.72,28.571 -28.41,28.571 -1.684,0 -3.332,-0.146 -4.934,-0.429 -2.467,1.422 -5.327,2.231 -8.375,2.231 -9.329,0 -16.891,-7.607 -16.891,-16.989 0,-3.064 0.805,-5.941 2.22,-8.423 -0.283,-1.61 -0.428,-3.268 -0.428,-4.961 0,-15.779 12.72,-28.574 28.408,-28.574 1.685,0 3.333,0.148 4.936,0.431 2.468,-1.422 5.327,-2.232 8.373,-2.232 9.329,0 16.893,7.606 16.893,16.99 C 2.22,-5.358 1.412,-2.482 0,0 m -27.865,-13.313 c -10.094,0 -14.705,5.138 -14.705,8.913 0,1.936 1.516,3.268 3.455,3.268 4.318,0 3.194,-6.478 11.25,-6.478 4.123,0 6.538,2.481 6.538,4.808 0,1.401 -0.803,2.958 -3.518,3.639 l -8.975,2.275 c -7.227,1.837 -8.494,5.859 -8.494,9.586 0,7.742 7.076,10.54 13.821,10.54 6.209,0 13.591,-3.426 13.591,-8.072 0,-1.99 -1.669,-3.073 -3.609,-3.073 -3.686,0 -3.072,5.184 -10.495,5.184 -3.686,0 -5.629,-1.725 -5.629,-4.15 0,-2.418 2.851,-3.239 5.377,-3.823 l 6.642,-1.498 c 7.277,-1.644 9.223,-5.91 9.223,-9.973 0,-6.291 -4.872,-11.146 -14.472,-11.146"
+             style="fill:#0078d7;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path89"
+             inkscape:connector-curvature="0" />
+        </g>
+      </g>
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/slideshare.png b/images/reference/slideshare.png
new file mode 100644
index 00000000..7a930ecd
Binary files /dev/null and b/images/reference/slideshare.png differ
diff --git a/images/reference/snapchat.svg b/images/reference/snapchat.svg
new file mode 100644
index 00000000..5713c838
--- /dev/null
+++ b/images/reference/snapchat.svg
@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="576"
+   height="576"
+   viewBox="0 0 576 576"
+   sodipodi:docname="snapchat.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="640"
+     inkscape:window-height="480"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="0.40972222"
+     inkscape:cx="288"
+     inkscape:cy="288"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="ink_ext_XXXXXX"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,576)"><g
+       id="g12"
+       transform="scale(0.1)"><path
+         d="m 3631.66,4320.03 c 380.11,0 688.34,-308.19 688.34,-688.42 V 688.352 C 4320,308.219 4011.77,0 3631.66,0 H 688.387 C 308.227,0 0,308.219 0,688.352 V 3631.61 c 0,380.23 308.227,688.42 688.387,688.42 H 3631.66"
+         style="fill:#f0ee12;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path14"
+         inkscape:connector-curvature="0" /><path
+         d="m 2175.86,674.781 c -8.15,0 -16.17,0.231 -24.18,0.61 h -0.02 c -5.1,-0.391 -10.45,-0.61 -15.79,-0.61 -187.48,0 -307.82,85.059 -424.18,167.328 -80.35,56.782 -156.17,110.371 -245.51,125.25 -43.59,7.219 -86.98,10.879 -128.92,10.879 -75.54,0 -135.13,-11.66 -178.64,-20.168 -26.44,-5.172 -49.25,-9.621 -66.58,-9.621 -18.11,0 -37.74,3.922 -46.26,33.063 -7.42,25.248 -12.78,49.698 -17.93,73.348 -13.29,60.88 -22.73,98.31 -48.241,102.23 -297.359,45.93 -382.468,108.56 -401.441,153 -2.688,6.35 -4.215,12.72 -4.582,19.02 -0.961,17.07 11.133,32.15 28,34.9 457.114,75.28 662.094,542.47 670.604,562.31 0.23,0.55 0.48,1.08 0.73,1.63 27.98,56.69 33.46,105.91 16.34,146.25 -31.37,73.93 -133.68,106.42 -201.4,127.9 -16.57,5.24 -32.28,10.2 -44.67,15.1 -135.139,53.42 -146.385,108.26 -141.077,136.21 9.059,47.62 72.703,80.81 124.177,80.81 14.11,0 26.54,-2.5 36.99,-7.38 60.79,-28.48 115.58,-42.91 162.85,-42.91 65.32,0 93.83,27.45 97.32,31.05 -1.66,30.94 -3.72,63.25 -5.83,96.59 -13.61,216.12 -30.48,484.65 37.89,637.93 204.92,459.47 639.47,495.16 767.77,495.16 3.29,0 56.25,0.57 56.25,0.57 l 7.6,0.03 c 128.6,0 564.1,-35.76 769.13,-495.48 68.39,-153.36 51.47,-422.13 37.84,-638.08 l -0.57,-9.39 c -1.89,-30.07 -3.71,-59.3 -5.24,-87.28 3.27,-3.33 29.49,-28.58 88.71,-30.85 h 0.07 c 45,1.72 96.72,16.07 153.48,42.66 16.64,7.77 35.11,9.41 47.69,9.41 19.21,0 38.68,-3.72 54.85,-10.47 l 0.98,-0.4 c 45.91,-16.27 75.99,-48.45 76.63,-82.07 0.6,-31.67 -23.57,-79.27 -142.15,-126.11 -12.29,-4.83 -28,-9.82 -44.63,-15.1 -67.8,-21.51 -170.07,-53.97 -201.42,-127.89 -17.14,-40.32 -11.65,-89.5 16.32,-146.23 0.25,-0.55 0.53,-1.08 0.74,-1.66 8.51,-19.82 213.31,-486.88 670.63,-562.24 16.88,-2.79 28.94,-17.85 28.01,-34.93 -0.38,-6.41 -1.94,-12.86 -4.67,-19.13 -18.87,-44.12 -103.91,-106.67 -401.37,-152.63 -24.3,-3.73 -33.72,-35.4 -48.22,-101.8 -5.27,-24.17 -10.61,-47.9 -17.96,-72.871 -6.34,-21.66 -19.84,-31.801 -42.55,-31.801 h -3.7 c -15.75,0 -38.16,2.82 -66.56,8.402 -50.36,9.852 -106.82,18.918 -178.66,18.918 -41.95,0 -85.36,-3.66 -128.98,-10.879 -89.24,-14.879 -165.01,-68.371 -245.21,-125.058 -116.6,-82.461 -236.92,-167.52 -424.46,-167.52"
+         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path16"
+         inkscape:connector-curvature="0" /><path
+         d="M 2187.13,3678.75 H 2187 c -2.79,0 -5.41,0 -7.9,-0.05 v 0 c 0,0 -51.8,-0.52 -55.92,-0.52 -133.31,0 -585.13,-37.13 -798.29,-515.05 -71.69,-160.78 -54.5,-433.85 -40.72,-653.28 1.62,-25.88 3.35,-52.74 4.83,-78.69 -11.03,-6.11 -31.17,-13.71 -62.87,-13.71 -42.31,0 -92.32,13.36 -148.62,39.75 -14.95,7 -32.18,10.5 -51.22,10.5 -65.938,0 -144.81,-43.38 -157.087,-108.04 -8.855,-46.56 11.977,-114.48 161.657,-173.6 13.51,-5.34 29.75,-10.48 46.9,-15.9 61.83,-19.64 155.3,-49.3 180.67,-109.05 13.13,-30.95 7.89,-70.79 -15.55,-118.37 -0.51,-1.08 -1.03,-2.14 -1.49,-3.25 -8.23,-19.14 -206.05,-470.1 -645.242,-542.4 -33.773,-5.57 -57.91,-35.7 -56.035,-69.87 0.582,-10.16 2.989,-20.28 7.149,-30.1 32.961,-77.06 172.027,-133.53 425.199,-172.82 8.461,-11.45 17.25,-51.87 22.641,-76.51 5.288,-24.3 10.748,-49.36 18.528,-75.802 7.63,-25.988 27.45,-57.058 78.41,-57.058 20.58,0 44.87,4.75 72.98,10.269 42.18,8.242 99.94,19.52 172.24,19.52 40.1,0 81.66,-3.481 123.51,-10.418 81.69,-13.61 151.11,-62.68 231.48,-119.492 115.11,-81.391 245.47,-173.528 443.62,-173.528 5.44,0 10.92,0.16 16.33,0.559 6.43,-0.281 14.78,-0.559 23.66,-0.559 198.21,0 328.55,92.149 443.58,173.5 80.55,56.891 149.92,105.938 231.61,119.52 41.78,6.937 83.35,10.418 123.46,10.418 68.98,0 123.56,-8.77 172.24,-18.278 30.5,-5.972 55.05,-9.011 72.98,-9.011 l 1.88,-0.032 h 1.82 c 37.64,0 64.19,19.891 74.73,55.981 7.63,25.902 13.1,50.311 18.51,75.031 5.36,24.56 14.13,64.81 22.56,76.18 253.24,39.32 392.27,95.7 425.16,172.43 4.23,9.82 6.66,20.02 7.24,30.27 1.9,34.19 -22.25,64.28 -56,69.83 -439.4,72.42 -637.05,523.28 -645.26,542.4 -0.47,1.1 -0.97,2.2 -1.51,3.26 -23.46,47.57 -28.65,87.38 -15.53,118.33 25.35,59.75 118.78,89.41 180.62,109.01 17.3,5.49 33.56,10.67 46.93,15.94 109.54,43.26 164.49,96.39 163.33,157.91 -0.95,48.32 -38.58,91.43 -98.4,112.8 l -0.18,0.06 c -20.12,8.35 -44,12.91 -67.39,12.91 -15.99,0 -39.71,-2.18 -61.87,-12.54 -52.1,-24.42 -98.93,-37.69 -139.3,-39.5 -26.77,1.25 -44.29,8 -54.28,13.5 1.27,22.27 2.69,45.19 4.2,69.14 l 0.56,9.31 c 13.86,219.58 31.06,492.89 -40.7,653.78 -213.25,478.13 -666.03,515.32 -799.72,515.32 z m 0,-67 c 121.73,-0.02 540.97,-32.68 738.55,-475.62 65.03,-145.82 48.4,-410.04 35.01,-622.32 -2.12,-33.66 -4.18,-66.28 -5.85,-97.49 l -0.73,-13.38 8.97,-9.97 c 3.58,-4.03 37.42,-39.36 112.61,-42.28 l 1.26,-0.03 1.23,0.03 c 49.71,1.87 105.74,17.29 166.6,45.81 8.93,4.2 20.85,6.24 33.46,6.24 14.4,0 29.66,-2.7 42.26,-8.01 l 1.89,-0.76 c 31.88,-11.17 54.44,-32.27 54.82,-51.31 0.19,-10.83 -7.91,-49.63 -120.97,-94.28 -11.04,-4.38 -25.61,-8.99 -42.46,-14.31 -73.57,-23.39 -184.72,-58.62 -222.14,-146.73 -21.08,-49.73 -15.34,-108.32 17.12,-174.19 13.37,-31.16 223.33,-504.27 695.97,-582.14 -0.13,-2.19 -0.66,-4.68 -1.94,-7.57 -8.03,-18.87 -58.95,-84.01 -375.74,-132.91 -49.59,-7.65 -61.75,-63.18 -75.85,-127.81 -5.03,-23.1 -10.25,-46.41 -17.36,-70.56 -2.15,-7.301 -2.56,-7.73 -10.41,-7.73 -1.07,0 -2.29,0 -3.7,0 v 0 c -14.05,0 -35.41,2.922 -60.14,7.761 -44.9,8.779 -106.47,19.539 -185.08,19.539 -43.87,0 -89.11,-3.81 -134.44,-11.33 -96.94,-16.138 -175.81,-71.92 -259.34,-130.92 -112.12,-79.289 -228.01,-161.21 -404.87,-161.21 -7.67,0 -15.24,0.25 -22.8,0.609 l -1.99,0.101 -2.01,-0.179 c -4.34,-0.36 -8.71,-0.531 -13.19,-0.531 -176.82,0 -292.76,81.921 -404.86,161.179 -83.5,59.031 -162.39,114.813 -259.31,130.951 -45.35,7.52 -90.56,11.33 -134.44,11.33 -78.59,0 -140.16,-11.968 -185.09,-20.761 -24.72,-4.86 -46.11,-9.008 -60.13,-9.008 -11.46,0 -11.7,0.66 -14.12,8.937 -7.1,24.172 -12.31,48.102 -17.35,71.182 -14.11,64.62 -26.32,120.49 -75.851,128.13 -316.817,48.92 -367.707,114.22 -375.75,133.05 -1.278,2.92 -1.809,5.47 -1.922,7.69 472.603,77.87 682.563,550.92 695.933,582.17 32.46,65.9 38.23,124.45 17.13,174.15 -37.39,88.14 -148.55,123.41 -222.13,146.8 -16.86,5.3 -31.42,9.93 -42.47,14.31 -95.522,37.72 -124.865,75.72 -120.471,98.76 5.059,26.56 51.09,53.56 91.251,53.56 9.04,0 16.93,-1.44 22.79,-4.2 65.25,-30.53 124.85,-46.07 177.05,-46.07 82.16,0 118.73,38.23 122.61,42.56 l 8.91,9.95 -0.73,13.34 c -1.67,31.15 -3.72,63.76 -5.85,97.4 -13.37,212.28 -30,476.32 35.04,622.17 196.81,441.32 614,475.32 737.17,475.32 3.04,0 56.57,0.53 56.57,0.53 2.3,0.03 4.71,0.05 7.28,0.05"
+         style="fill:#11100e;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path18"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/soundcloud.png b/images/reference/soundcloud.png
new file mode 100644
index 00000000..2f41ae97
Binary files /dev/null and b/images/reference/soundcloud.png differ
diff --git a/images/reference/spotify.svg b/images/reference/spotify.svg
new file mode 100644
index 00000000..6b335f05
--- /dev/null
+++ b/images/reference/spotify.svg
@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="226.73334"
+   height="226.73334"
+   viewBox="0 0 226.73334 226.73334"
+   sodipodi:docname="spotify.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="640"
+     inkscape:window-height="480"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="1.0408703"
+     inkscape:cx="113.36667"
+     inkscape:cy="113.36667"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="ink_ext_XXXXXX"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,226.73333)"><g
+       id="g12"
+       transform="scale(0.1)"><path
+         d="m 1345.62,945.281 c -269.94,160.309 -715.202,175.049 -972.893,96.839 -41.383,-12.56 -85.145,10.81 -97.68,52.18 -12.543,41.41 10.793,85.14 52.207,97.72 295.812,89.79 787.556,72.45 1098.316,-112.02 37.22,-22.1 49.43,-70.17 27.37,-107.328 -22.08,-37.219 -70.19,-49.488 -107.32,-27.391 z m -8.84,-237.441 c -18.94,-30.731 -59.12,-40.371 -89.81,-21.5 -225.05,138.336 -568.216,178.41 -834.466,97.59 -34.527,-10.434 -70.996,9.035 -81.484,43.496 -10.403,34.527 9.074,70.929 43.539,81.429 304.152,92.295 682.261,47.59 940.741,-111.253 30.69,-18.903 40.35,-59.102 21.48,-89.762 z M 1234.31,479.809 c -15.05,-24.68 -47.18,-32.411 -71.77,-17.368 -196.653,120.188 -444.173,147.329 -735.673,80.75 -28.09,-6.441 -56.086,11.161 -62.492,39.25 -6.434,28.079 11.102,56.079 39.254,62.489 318.996,72.925 592.633,41.539 813.361,-93.34 24.61,-15.031 32.36,-47.18 17.32,-71.781 z M 850.254,1687.68 c -462.496,0 -837.4337,-374.93 -837.4337,-837.418 0,-462.543 374.9377,-837.4417 837.4337,-837.4417 462.506,0 837.426,374.8987 837.426,837.4417 0,462.488 -374.92,837.418 -837.426,837.418"
+         style="fill:#1ed760;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path14"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/stackoverflow.svg b/images/reference/stackoverflow.svg
new file mode 100644
index 00000000..3571cf9a
--- /dev/null
+++ b/images/reference/stackoverflow.svg
@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<svg version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 viewBox="0 0 120 120" style="enable-background:new 0 0 120 120;" xml:space="preserve">
+<style type="text/css">
+	.st0{fill:#BCBBBB;}
+	.st1{fill:#F48023;}
+</style>
+<polygon class="st0" points="84.4,93.8 84.4,70.6 92.1,70.6 92.1,101.5 22.6,101.5 22.6,70.6 30.3,70.6 30.3,93.8 "/>
+<path class="st1" d="M38.8,68.4l37.8,7.9l1.6-7.6l-37.8-7.9L38.8,68.4z M43.8,50.4l35,16.3l3.2-7l-35-16.4L43.8,50.4z M53.5,33.2
+	l29.7,24.7l4.9-5.9L58.4,27.3L53.5,33.2z M72.7,14.9l-6.2,4.6l23,31l6.2-4.6L72.7,14.9z M38,86h38.6v-7.7H38V86z"/>
+</svg>
diff --git a/images/reference/steam.svg b/images/reference/steam.svg
new file mode 100644
index 00000000..0e3d8e1c
--- /dev/null
+++ b/images/reference/steam.svg
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="512"
+   height="512.88849"
+   viewBox="0 0 512 512.88849"
+   sodipodi:docname="steam.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6"><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath18"><path
+         d="M 0,612 H 792 V 0 H 0 Z"
+         id="path16"
+         inkscape:connector-curvature="0" /></clipPath></defs><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview4"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:zoom="0.81802549"
+     inkscape:cx="488.46542"
+     inkscape:cy="320.96865"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="Steam_Logo_Lockups"
+     transform="matrix(1.3333333,0,0,-1.3333333,3.4250666e-6,512.88845)"><g
+       id="g64"
+       transform="matrix(4.2173704,0,0,4.2173704,191.66683,384.66635)"><path
+         d="m 0,0 c -23.956,0 -43.582,-18.472 -45.447,-41.947 l 24.443,-10.106 c 2.071,1.416 4.573,2.244 7.265,2.244 0.241,0 0.481,-0.006 0.719,-0.02 l 10.871,15.756 c 0,0.075 -0.002,0.148 -0.002,0.223 0,9.483 7.715,17.199 17.199,17.199 9.483,0 17.199,-7.716 17.199,-17.199 0,-9.484 -7.716,-17.2 -17.199,-17.2 -0.131,0 -0.26,0.003 -0.39,0.006 L -0.845,-62.106 c 0.008,-0.202 0.015,-0.407 0.015,-0.611 0,-7.119 -5.791,-12.91 -12.909,-12.91 -6.249,0 -11.473,4.461 -12.657,10.367 l -17.481,7.227 c 5.413,-19.143 23,-33.177 43.877,-33.177 25.187,0 45.605,20.419 45.605,45.605 C 45.605,-20.418 25.187,0 0,0"
+         style="fill:#231f20;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path66"
+         inkscape:connector-curvature="0" /></g><g
+       id="g68"
+       transform="matrix(4.2173704,0,0,4.2173704,120.52823,92.83107)"><path
+         d="m 0,0 -5.602,2.314 c 0.993,-2.067 2.711,-3.797 4.991,-4.748 4.929,-2.054 10.613,0.286 12.668,5.218 0.994,2.388 1.001,5.021 0.015,7.413 C 11.087,12.59 9.228,14.456 6.84,15.452 4.47,16.438 1.931,16.401 -0.3,15.56 L 5.487,13.167 C 9.123,11.651 10.842,7.476 9.327,3.84 7.813,0.204 3.636,-1.516 0,0"
+         style="fill:#231f20;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path70"
+         inkscape:connector-curvature="0" /></g><g
+       id="g72"
+       transform="matrix(4.2173704,0,0,4.2173704,218.90345,241.99018)"><path
+         d="m 0,0 c 0,4.755 3.855,8.608 8.609,8.608 4.755,0 8.609,-3.853 8.609,-8.608 0,-4.755 -3.854,-8.608 -8.609,-8.608 C 3.855,-8.608 0,-4.755 0,0 m 20.05,-0.02 c 0,6.319 -5.141,11.461 -11.46,11.461 -6.319,0 -11.46,-5.142 -11.46,-11.461 0,-6.319 5.141,-11.459 11.46,-11.459 6.319,0 11.46,5.14 11.46,11.459"
+         style="fill:#231f20;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path74"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/telegram.png b/images/reference/telegram.png
new file mode 100644
index 00000000..ee0756db
Binary files /dev/null and b/images/reference/telegram.png differ
diff --git a/images/reference/tox.svg b/images/reference/tox.svg
new file mode 100644
index 00000000..90ced6f2
--- /dev/null
+++ b/images/reference/tox.svg
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Generator: Adobe Illustrator 15.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="Layer_1"
+   x="0px"
+   y="0px"
+   width="90px"
+   height="109px"
+   viewBox="-1 -1 92 111"
+   enable-background="new 0 0 90 109"
+   xml:space="preserve"
+   inkscape:version="0.91 r13725"
+   sodipodi:docname="logo.svg"><metadata
+     id="metadata11"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /></cc:Work></rdf:RDF></metadata><defs
+     id="defs9" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1278"
+     inkscape:window-height="595"
+     id="namedview7"
+     showgrid="false"
+     inkscape:snap-bbox="false"
+     inkscape:zoom="2.1651376"
+     inkscape:cx="-11.973612"
+     inkscape:cy="54.5"
+     inkscape:window-x="0"
+     inkscape:window-y="24"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="Layer_1" /><g
+     id="g3"><path
+       d="M71.574,41.851c0-4.685,0.074-10.553-0.033-15.237c-0.047-2.018-0.268-4.076-0.746-6.034   C67.374,6.581,53.823-2.125,39.594,0.45C26.998,2.729,17.621,13.968,17.621,26.786v13.865v1.17c-0.475,0-0.794-0.001-1.116,0H5.023   C2.25,41.821,0,44.07,0,46.844v56.875c0,2.773,2.25,5.023,5.023,5.023h79.451c2.775,0,5.024-2.25,5.024-5.023V46.844   c0-2.774-2.249-5.023-5.024-5.023L71.574,41.851z M52.107,95.118H37.332c-2.322,0-4.203-1.914-4.203-4.274   c0-0.063,0.007-0.127,0.009-0.19c-0.005,0-0.006-1.021-0.008-2.041c-0.001-1.129,0.511-4.289,2.061-6.574   c1.641-2.418,3.855-3.99,6.257-4.697c-3.166-1.291-5.396-4.398-5.396-8.025c0-4.789,3.88-8.668,8.667-8.668   c4.789,0,8.667,3.879,8.667,8.668c0,3.719-2.344,6.891-5.637,8.12c2.332,0.753,4.537,2.313,6.273,4.707   c1.621,2.235,2.285,5.343,2.285,6.47v2.043c-0.006,0.062,0,0.125,0,0.189C56.308,93.204,54.427,95.118,52.107,95.118    M61.779,33.104c-1.562,4.611-4.52,8.305-7.61,11.912c-2.386,2.783-5.19,5.125-8.176,7.247c-0.144,0.103-0.298,0.188-0.685,0.427   c1.781-3.076,3.217-5.998,3.633-9.404c-4.234,1.002-8.227,0.564-12.093-1.14c-6.862-3.023-10.963-9.618-10.263-17.063   c0.573-6.127,3.94-10.543,9.321-13.395c8.667-4.593,19.734-1.655,24.689,6.516C63.482,22.962,63.527,27.945,61.779,33.104"
+       id="path5"
+       style="opacity:1;fill:none;fill-opacity:0;stroke:#c4d2df;stroke-opacity:1" /></g></svg>
diff --git a/images/reference/tumblr.svg b/images/reference/tumblr.svg
new file mode 100644
index 00000000..6dbf5b78
--- /dev/null
+++ b/images/reference/tumblr.svg
@@ -0,0 +1 @@
+<svg id="logo" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1024 1024"><defs><style>.cls-1{fill:#39475d;}.cls-2{fill:#fff;}</style></defs><title>tumblr-logo-whiteonblue</title><rect class="cls-1" x="-1.33" width="1024" height="1024"/><path class="cls-2" d="M702.77,799.58C680.56,823.3,629.09,839.4,583,840.16l-5.06,0c-154.84,0-188.47-113.84-188.47-180.29V475.26h-61a12.79,12.79,0,0,1-12.79-12.79V375.29a21.72,21.72,0,0,1,14.47-20.46c79.49-28,104.42-97.37,108.11-150.1,1-14.09,8.37-20.92,20.6-20.92h90.92a12.79,12.79,0,0,1,12.79,12.79V344.25H669A12.79,12.79,0,0,1,681.8,357V461.77A12.79,12.79,0,0,1,669,474.55H562.08V645.28c0,42.87,28.25,54.7,45.7,54.7,16.74-.4,33.22-5.5,41.48-8.82,6.13-2.46,11.52-4.09,16.34-2.88,4.49,1.12,7.44,4.3,9.43,10.1l28.21,82.4C705.53,787.38,707.5,794.53,702.77,799.58Z"/></svg>
\ No newline at end of file
diff --git a/images/reference/twitter.svg b/images/reference/twitter.svg
new file mode 100644
index 00000000..d0c22e7b
--- /dev/null
+++ b/images/reference/twitter.svg
@@ -0,0 +1 @@
+<svg id="Logo_FIXED" data-name="Logo — FIXED" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 400 400"><defs><style>.cls-1{fill:none;}.cls-2{fill:#1da1f2;}</style></defs><title>Twitter_Logo_Blue</title><rect class="cls-1" width="400" height="400" fill="#1da1f2"/><path class="cls-2" d="M153.62,301.59c94.34,0,145.94-78.16,145.94-145.94,0-2.22,0-4.43-.15-6.63A104.36,104.36,0,0,0,325,122.47a102.38,102.38,0,0,1-29.46,8.07,51.47,51.47,0,0,0,22.55-28.37,102.79,102.79,0,0,1-32.57,12.45,51.34,51.34,0,0,0-87.41,46.78A145.62,145.62,0,0,1,92.4,107.81a51.33,51.33,0,0,0,15.88,68.47A50.91,50.91,0,0,1,85,169.86c0,.21,0,.43,0,.65a51.31,51.31,0,0,0,41.15,50.28,51.21,51.21,0,0,1-23.16.88,51.35,51.35,0,0,0,47.92,35.62,102.92,102.92,0,0,1-63.7,22A104.41,104.41,0,0,1,75,278.55a145.21,145.21,0,0,0,78.62,23" fill="#fff"/></svg>
\ No newline at end of file
diff --git a/images/reference/vimeo.svg b/images/reference/vimeo.svg
new file mode 100644
index 00000000..76e88dcc
--- /dev/null
+++ b/images/reference/vimeo.svg
@@ -0,0 +1,56 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="160"
+   height="160"
+   viewBox="0 0 160 160"
+   sodipodi:docname="vimeo.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6" /><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="640"
+     inkscape:window-height="480"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="1.475"
+     inkscape:cx="80"
+     inkscape:cy="80"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="0"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="ink_ext_XXXXXX"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,160)"><g
+       id="g12"
+       transform="scale(0.1)"><path
+         d="M 0,0 H 1200 V 1200 H 0 Z"
+         style="fill:#53bded;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path14"
+         inkscape:connector-curvature="0" /><path
+         d="M 1016.76,806.5 C 1012.9,722.094 953.953,606.531 839.906,459.824 722.004,306.629 622.242,230.004 540.668,230.004 c -50.566,0 -93.34,46.633 -128.285,139.961 -23.332,85.547 -46.641,171.09 -69.985,256.64 -25.957,93.274 -53.777,139.969 -83.554,139.969 -6.492,0 -29.192,-13.652 -68.063,-40.836 L 150,778.281 c 42.797,37.594 85.008,75.188 126.539,112.84 57.082,49.301 99.961,75.246 128.52,77.863 67.464,6.489 109.007,-39.636 124.593,-138.367 16.852,-106.535 28.524,-172.789 35.063,-198.715 19.476,-88.394 40.887,-132.547 64.254,-132.547 18.129,0 45.41,28.668 81.773,86.028 36.293,57.316 55.746,100.937 58.371,130.918 5.192,49.476 -14.273,74.269 -58.371,74.269 -20.765,0 -42.176,-4.777 -64.195,-14.218 42.633,139.574 124.055,207.359 244.23,203.492 89.11,-2.614 131.133,-60.395 125.983,-173.344"
+         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path16"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/vk.png b/images/reference/vk.png
new file mode 100644
index 00000000..f8caefeb
Binary files /dev/null and b/images/reference/vk.png differ
diff --git a/images/reference/wechat.svg b/images/reference/wechat.svg
new file mode 100644
index 00000000..9b22049c
--- /dev/null
+++ b/images/reference/wechat.svg
@@ -0,0 +1,153 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   width="50.598915mm"
+   height="50.59927mm"
+   viewBox="0 0 50.598915 50.59927"
+   version="1.1"
+   id="svg3816"
+   inkscape:version="0.92.1 r15371"
+   sodipodi:docname="wechat.svg">
+  <defs
+     id="defs3810">
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath104">
+      <path
+         d="m 255.338,282.431 c -16.177,0 -29.413,-13.238 -29.413,-29.419 v 0 -84.599 c 0,-16.178 13.236,-29.413 29.413,-29.413 v 0 h 84.602 c 16.095,0 29.28,13.1 29.415,29.166 v 0 85.094 c -0.135,16.068 -13.32,29.171 -29.415,29.171 v 0 z"
+         id="path102"
+         inkscape:connector-curvature="0" />
+    </clipPath>
+    <linearGradient
+       x1="0"
+       y1="0"
+       x2="1"
+       y2="0"
+       gradientUnits="userSpaceOnUse"
+       gradientTransform="matrix(0,143.00507,-143.00507,0,297.63998,139.26192)"
+       spreadMethod="pad"
+       id="linearGradient120">
+      <stop
+         style="stop-opacity:1;stop-color:#00b70c"
+         offset="0"
+         id="stop110" />
+      <stop
+         style="stop-opacity:1;stop-color:#00b70c"
+         offset="0.00164835"
+         id="stop112" />
+      <stop
+         style="stop-opacity:1;stop-color:#00d50c"
+         offset="0.94889914"
+         id="stop114" />
+      <stop
+         style="stop-opacity:1;stop-color:#00d50c"
+         offset="0.951703"
+         id="stop116" />
+      <stop
+         style="stop-opacity:1;stop-color:#00d50c"
+         offset="1"
+         id="stop118" />
+    </linearGradient>
+    <clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath130">
+      <path
+         d="M 225.925,139 H 369.354 V 282.43 H 225.925 Z"
+         id="path128"
+         inkscape:connector-curvature="0" />
+    </clipPath>
+  </defs>
+  <sodipodi:namedview
+     id="base"
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1.0"
+     inkscape:pageopacity="0.0"
+     inkscape:pageshadow="2"
+     inkscape:zoom="0.35"
+     inkscape:cx="1314.2857"
+     inkscape:cy="560"
+     inkscape:document-units="mm"
+     inkscape:current-layer="layer1"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1" />
+  <metadata
+     id="metadata3813">
+    <rdf:RDF>
+      <cc:Work
+         rdf:about="">
+        <dc:format>image/svg+xml</dc:format>
+        <dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
+        <dc:title></dc:title>
+      </cc:Work>
+    </rdf:RDF>
+  </metadata>
+  <g
+     inkscape:label="Layer 1"
+     inkscape:groupmode="layer"
+     id="layer1"
+     transform="translate(3.1275e-7,-246.40073)">
+    <g
+       transform="matrix(0.35277777,0,0,-0.35277777,-79.701318,346.03611)"
+       id="g98">
+      <g
+         id="g100"
+         clip-path="url(#clipPath104)">
+        <g
+           id="g106">
+          <g
+             id="g108">
+            <path
+               d="m 255.338,282.431 c -16.177,0 -29.413,-13.238 -29.413,-29.419 v 0 -84.599 c 0,-16.178 13.236,-29.413 29.413,-29.413 v 0 h 84.602 c 16.095,0 29.28,13.1 29.415,29.166 v 0 85.094 c -0.135,16.068 -13.32,29.171 -29.415,29.171 v 0 z"
+               style="fill:url(#linearGradient120);stroke:none"
+               id="path122"
+               inkscape:connector-curvature="0" />
+          </g>
+        </g>
+      </g>
+    </g>
+    <g
+       transform="matrix(0.35277777,0,0,-0.35277777,-79.701318,346.03611)"
+       id="g124">
+      <g
+         id="g126"
+         clip-path="url(#clipPath130)">
+        <g
+           id="g132"
+           transform="translate(343.6903,174.8701)">
+          <path
+             d="m 0,0 c 7.385,5.352 12.105,13.271 12.105,22.066 0,16.124 -15.686,29.194 -35.033,29.194 -19.348,0 -35.033,-13.07 -35.033,-29.194 0,-16.123 15.685,-29.193 35.033,-29.193 3.997,0 7.857,0.571 11.435,1.6 0.325,0.1 0.671,0.154 1.03,0.154 0.672,0 1.284,-0.205 1.86,-0.539 l 7.669,-4.427 c 0.215,-0.124 0.421,-0.218 0.675,-0.218 0.646,0 1.167,0.523 1.167,1.169 0,0.287 -0.114,0.577 -0.188,0.853 -0.044,0.165 -0.989,3.688 -1.578,5.889 -0.067,0.247 -0.122,0.485 -0.122,0.744 0,0.784 0.386,1.478 0.98,1.902 m -34.607,26.737 c -2.578,0 -4.67,2.091 -4.67,4.672 0,2.579 2.092,4.671 4.67,4.671 2.582,0 4.672,-2.092 4.672,-4.671 0,-2.581 -2.09,-4.672 -4.672,-4.672 m 23.356,0 c -2.579,0 -4.671,2.091 -4.671,4.672 0,2.579 2.092,4.671 4.671,4.671 2.581,0 4.671,-2.092 4.671,-4.671 0,-2.581 -2.09,-4.672 -4.671,-4.672"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path134"
+             inkscape:connector-curvature="0" />
+        </g>
+        <g
+           id="g136"
+           transform="translate(281.5243,258.3613)">
+          <path
+             d="m 0,0 c -23.218,0 -42.04,-15.686 -42.04,-35.034 0,-10.556 5.663,-20.057 14.526,-26.479 0.712,-0.508 1.177,-1.341 1.177,-2.284 0,-0.309 -0.067,-0.595 -0.148,-0.892 -0.707,-2.64 -1.841,-6.868 -1.894,-7.066 -0.088,-0.331 -0.225,-0.678 -0.225,-1.024 0,-0.775 0.626,-1.402 1.401,-1.402 0.304,0 0.553,0.114 0.809,0.262 l 9.204,5.313 c 0.692,0.4 1.425,0.646 2.232,0.646 0.43,0 0.844,-0.065 1.236,-0.185 4.293,-1.234 8.925,-1.921 13.722,-1.921 0.775,0 1.544,0.02 2.309,0.055 -0.913,2.733 -1.412,5.611 -1.412,8.586 0,17.645 17.165,31.951 38.341,31.951 0.767,0 1.526,-0.024 2.283,-0.062 C 38.355,-12.799 20.973,0 0,0 m -14.014,-29.428 c -3.095,0 -5.604,2.509 -5.604,5.605 0,3.096 2.509,5.606 5.604,5.606 3.097,0 5.606,-2.51 5.606,-5.606 0,-3.096 -2.509,-5.605 -5.606,-5.605 m 28.027,0 c -3.096,0 -5.605,2.509 -5.605,5.605 0,3.096 2.509,5.606 5.605,5.606 3.096,0 5.606,-2.51 5.606,-5.606 0,-3.096 -2.51,-5.605 -5.606,-5.605"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path138"
+             inkscape:connector-curvature="0" />
+        </g>
+      </g>
+    </g>
+  </g>
+</svg>
diff --git a/images/reference/whatsapp.svg b/images/reference/whatsapp.svg
new file mode 100644
index 00000000..10d82178
--- /dev/null
+++ b/images/reference/whatsapp.svg
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="1706.9867"
+   height="1422.48"
+   viewBox="0 0 1706.9867 1422.48"
+   sodipodi:docname="whatsapp.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6"><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath18"><path
+         d="M 0,1066.861 H 1280.244 V 0 H 0 Z"
+         id="path16"
+         inkscape:connector-curvature="0" /></clipPath><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath30"><path
+         d="M 0,1066.861 H 1280.244 V 0 H 0 Z"
+         id="path28"
+         inkscape:connector-curvature="0" /></clipPath></defs><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview4"
+     showgrid="false"
+     inkscape:zoom="0.16590743"
+     inkscape:cx="853.49335"
+     inkscape:cy="711.23999"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="WhatsApp_Logo_2"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,1422.48)"><g
+       id="g12"><g
+         id="g14"
+         clip-path="url(#clipPath18)"><g
+           id="g20"
+           transform="translate(1260.3838)"><path
+             d="m 0,0 h -1240.524 c -10.968,0 -19.86,8.892 -19.86,19.86 v 1027.142 c 0,10.968 8.892,19.859 19.86,19.859 H 0 c 10.968,0 19.86,-8.891 19.86,-19.859 V 19.86 C 19.86,8.892 10.968,0 0,0"
+             style="fill:#25d366;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path22"
+             inkscape:connector-curvature="0" /></g></g></g><g
+       id="g24"><g
+         id="g26"
+         clip-path="url(#clipPath30)"><g
+           id="g32"
+           transform="translate(736.1802,489.2339)"><path
+             d="m 0,0 c -5.211,2.608 -30.831,15.213 -35.608,16.954 -4.776,1.739 -8.25,2.607 -11.724,-2.608 -3.474,-5.216 -13.461,-16.955 -16.501,-20.433 -3.039,-3.477 -6.079,-3.914 -11.29,-1.304 -5.211,2.608 -22.002,8.11 -41.906,25.865 -15.491,13.818 -25.95,30.882 -28.989,36.099 -3.04,5.217 -0.325,8.037 2.284,10.635 2.345,2.335 5.212,6.087 7.817,9.13 2.606,3.042 3.474,5.217 5.211,8.693 1.737,3.479 0.869,6.521 -0.435,9.129 -1.302,2.608 -11.724,28.259 -16.066,38.694 -4.23,10.16 -8.526,8.784 -11.725,8.945 -3.036,0.151 -6.514,0.183 -9.987,0.183 -3.474,0 -9.12,-1.304 -13.897,-6.52 -4.776,-5.217 -18.238,-17.825 -18.238,-43.473 0,-25.651 18.672,-50.429 21.278,-53.907 2.606,-3.479 36.745,-56.113 89.021,-78.685 12.432,-5.37 22.139,-8.576 29.707,-10.977 12.483,-3.967 23.843,-3.407 32.822,-2.065 10.012,1.495 30.831,12.605 35.174,24.777 C 11.29,-18.693 11.29,-8.26 9.987,-6.087 8.685,-3.913 5.211,-2.609 0,0 m -95.082,-129.825 h -0.07 c -31.105,0.012 -61.613,8.369 -88.227,24.162 l -6.33,3.757 -65.606,-17.21 17.511,63.966 -4.121,6.559 c -17.352,27.598 -26.517,59.496 -26.503,92.25 0.038,95.573 77.8,173.329 173.415,173.329 46.3,-0.016 89.822,-18.07 122.551,-50.836 C 60.265,133.388 78.278,89.836 78.26,43.519 78.221,-52.062 0.46,-129.825 -95.082,-129.825 M 52.446,191.049 c -39.375,39.421 -91.739,61.14 -147.53,61.163 -114.953,0 -208.511,-93.552 -208.557,-208.54 -0.015,-36.758 9.588,-72.635 27.839,-104.264 l -29.587,-108.071 110.558,29.001 c 30.462,-16.615 64.759,-25.373 99.664,-25.384 h 0.085 10e-4 c 114.941,0 208.507,93.561 208.554,208.551 0.021,55.726 -21.652,108.124 -61.027,147.544"
+             style="fill:#ffffff;fill-opacity:1;fill-rule:evenodd;stroke:none"
+             id="path34"
+             inkscape:connector-curvature="0" /></g></g></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/wikipedia.svg b/images/reference/wikipedia.svg
new file mode 100644
index 00000000..165b3f62
--- /dev/null
+++ b/images/reference/wikipedia.svg
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128" stroke-miterlimit="10" style="shape-rendering:geometricPrecision; fill-rule:evenodd">
+<path d="M 120.85,29.21 C 120.85,29.62 120.72,29.99 120.47,30.33 C 120.21,30.66 119.94,30.83 119.63,30.83 C 117.14,31.07 115.09,31.87 113.51,33.24 C 111.92,34.6 110.29,37.21 108.6,41.05 L 82.8,99.19 C 82.63,99.73 82.16,100 81.38,100 C 80.77,100 80.3,99.73 79.96,99.19 L 65.49,68.93 L 48.85,99.19 C 48.51,99.73 48.04,100 47.43,100 C 46.69,100 46.2,99.73 45.96,99.19 L 20.61,41.05 C 19.03,37.44 17.36,34.92 15.6,33.49 C 13.85,32.06 11.4,31.17 8.27,30.83 C 8,30.83 7.74,30.69 7.51,30.4 C 7.27,30.12 7.15,29.79 7.15,29.42 C 7.15,28.47 7.42,28 7.96,28 C 10.22,28 12.58,28.1 15.05,28.3 C 17.34,28.51 19.5,28.61 21.52,28.61 C 23.58,28.61 26.01,28.51 28.81,28.3 C 31.74,28.1 34.34,28 36.6,28 C 37.14,28 37.41,28.47 37.41,29.42 C 37.41,30.36 37.24,30.83 36.91,30.83 C 34.65,31 32.87,31.58 31.57,32.55 C 30.27,33.53 29.62,34.81 29.62,36.4 C 29.62,37.21 29.89,38.22 30.43,39.43 L 51.38,86.74 L 63.27,64.28 L 52.19,41.05 C 50.2,36.91 48.56,34.23 47.28,33.03 C 46,31.84 44.06,31.1 41.46,30.83 C 41.22,30.83 41,30.69 40.78,30.4 C 40.56,30.12 40.45,29.79 40.45,29.42 C 40.45,28.47 40.68,28 41.16,28 C 43.42,28 45.49,28.1 47.38,28.3 C 49.2,28.51 51.14,28.61 53.2,28.61 C 55.22,28.61 57.36,28.51 59.62,28.3 C 61.95,28.1 64.24,28 66.5,28 C 67.04,28 67.31,28.47 67.31,29.42 C 67.31,30.36 67.15,30.83 66.81,30.83 C 62.29,31.14 60.03,32.42 60.03,34.68 C 60.03,35.69 60.55,37.26 61.6,39.38 L 68.93,54.26 L 76.22,40.65 C 77.23,38.73 77.74,37.11 77.74,35.79 C 77.74,32.69 75.48,31.04 70.96,30.83 C 70.55,30.83 70.35,30.36 70.35,29.42 C 70.35,29.08 70.45,28.76 70.65,28.46 C 70.86,28.15 71.06,28 71.26,28 C 72.88,28 74.87,28.1 77.23,28.3 C 79.49,28.51 81.35,28.61 82.8,28.61 C 83.84,28.61 85.38,28.52 87.4,28.35 C 89.96,28.12 92.11,28 93.83,28 C 94.23,28 94.43,28.4 94.43,29.21 C 94.43,30.29 94.06,30.83 93.32,30.83 C 90.69,31.1 88.57,31.83 86.97,33.01 C 85.37,34.19 83.37,36.87 80.98,41.05 L 71.26,59.02 L 84.42,85.83 L 103.85,40.65 C 104.52,39 104.86,37.48 104.86,36.1 C 104.86,32.79 102.6,31.04 98.08,30.83 C 97.67,30.83 97.47,30.36 97.47,29.42 C 97.47,28.47 97.77,28 98.38,28 C 100.03,28 101.99,28.1 104.25,28.3 C 106.34,28.51 108.1,28.61 109.51,28.61 C 111,28.61 112.72,28.51 114.67,28.3 C 116.7,28.1 118.52,28 120.14,28 C 120.61,28 120.85,28.4 120.85,29.21 z" />
+</svg>
\ No newline at end of file
diff --git a/images/reference/wire.svg b/images/reference/wire.svg
new file mode 100644
index 00000000..adf42b2e
--- /dev/null
+++ b/images/reference/wire.svg
@@ -0,0 +1,3 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 275.4 226.2">
+  <path d="M275.4 141.2c0 46.9-37.9 84.9-84.8 85-19 0-37.5-6.4-52.4-18.3-15 11.9-33.6 18.4-52.8 18.4-46.9 0-85.4-38.1-85.4-85V7.5h16.2v133.6c.1 38.1 31.1 68.9 69.2 68.8 14.7 0 29-4.8 40.8-13.5-13.4-15.3-20.8-35-20.9-55.3V31.8c.3-17.9 15.1-32.1 33-31.8 17.4.3 31.5 14.4 31.8 31.8v109.3c.1 20.3-7.2 39.9-20.4 55.3 30.4 22.6 73.4 16.3 96-14.1 8.8-11.9 13.6-26.3 13.5-41.2V7.5h16.2v133.7zM153.9 31.8c0-8.9-7.2-16.2-16.2-16.2-8.9 0-16.2 7.2-16.2 16.2v109.3c0 16.2 5.8 31.9 16.2 44.3 10.5-12.4 16.2-28.1 16.2-44.3V31.8z"/>
+</svg>
diff --git a/images/reference/wordpress.svg b/images/reference/wordpress.svg
new file mode 100644
index 00000000..02a5a973
--- /dev/null
+++ b/images/reference/wordpress.svg
@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg29"
+   xml:space="preserve"
+   width="336"
+   height="336"
+   viewBox="0 0 336 336"
+   sodipodi:docname="wordpress.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata35"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs33"><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath45"><path
+         d="M 0,252 H 252 V 0 H 0 Z"
+         id="path43"
+         inkscape:connector-curvature="0" /></clipPath></defs><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview31"
+     showgrid="false"
+     inkscape:zoom="1.6607143"
+     inkscape:cx="168"
+     inkscape:cy="168"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g37" /><g
+     id="g37"
+     inkscape:groupmode="layer"
+     inkscape:label="wordpress-logo-notext-cmyk"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,336)"><g
+       id="g39"><g
+         id="g41"
+         clip-path="url(#clipPath45)"><g
+           id="g47"
+           transform="translate(41.647,125.3931)"><path
+             d="M 0,0 C 0,-33.629 19.542,-62.695 47.886,-76.464 L 7.357,34.578 C 2.643,24.012 0,12.318 0,0"
+             style="fill:#3f3c3c;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path49"
+             inkscape:connector-curvature="0" /></g><g
+           id="g51"
+           transform="translate(183.9648,129.6782)"><path
+             d="m 0,0 c 0,10.504 -3.773,17.773 -7.005,23.432 -4.306,7.002 -8.346,12.925 -8.346,19.927 0,7.809 5.922,15.079 14.268,15.079 0.377,0 0.734,-0.045 1.101,-0.068 -15.116,13.85 -35.255,22.307 -57.374,22.307 -29.684,0 -55.796,-15.231 -70.988,-38.295 1.995,-0.064 3.874,-0.103 5.468,-0.103 8.885,0 22.644,1.08 22.644,1.08 4.578,0.268 5.119,-6.46 0.544,-7.002 0,0 -4.605,-0.538 -9.724,-0.807 l 30.938,-92.032 18.596,55.763 -13.236,36.269 c -4.578,0.269 -8.912,0.807 -8.912,0.807 -4.579,0.271 -4.042,7.27 0.539,7.002 0,0 14.029,-1.08 22.377,-1.08 8.883,0 22.645,1.08 22.645,1.08 4.58,0.268 5.12,-6.46 0.542,-7.002 0,0 -4.609,-0.538 -9.723,-0.807 l 30.705,-91.331 8.476,28.315 C -2.797,-15.709 0,-7.271 0,0"
+             style="fill:#3f3c3c;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path53"
+             inkscape:connector-curvature="0" /></g><g
+           id="g55"
+           transform="translate(128.1006,117.9609)"><path
+             d="m 0,0 -25.495,-74.074 c 7.614,-2.239 15.664,-3.462 24.003,-3.462 9.894,0 19.384,1.708 28.215,4.816 -0.226,0.365 -0.437,0.751 -0.609,1.171 z"
+             style="fill:#3f3c3c;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path57"
+             inkscape:connector-curvature="0" /></g><g
+           id="g59"
+           transform="translate(201.1641,166.1533)"><path
+             d="m 0,0 c 0.365,-2.706 0.571,-5.609 0.571,-8.737 0,-8.618 -1.614,-18.31 -6.461,-30.431 l -25.95,-75.03 C -6.581,-99.471 10.406,-72.105 10.406,-40.76 10.406,-25.988 6.632,-12.101 0,0"
+             style="fill:#3f3c3c;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path61"
+             inkscape:connector-curvature="0" /></g><g
+           id="g63"
+           transform="translate(126.6089,30.8896)"><path
+             d="M 0,0 C -52.106,0 -94.499,42.396 -94.499,94.503 -94.499,146.609 -52.106,189 0,189 52.106,189 94.5,146.609 94.5,94.503 94.5,42.396 52.106,0 0,0 m 0,193.542 c -54.612,0 -99.041,-44.428 -99.041,-99.039 0,-54.614 44.429,-99.044 99.041,-99.044 54.612,0 99.043,44.43 99.043,99.044 0,54.611 -44.431,99.039 -99.043,99.039"
+             style="fill:#3f3c3c;fill-opacity:1;fill-rule:nonzero;stroke:none"
+             id="path65"
+             inkscape:connector-curvature="0" /></g></g></g></g></svg>
\ No newline at end of file
diff --git a/images/reference/youtube.svg b/images/reference/youtube.svg
new file mode 100644
index 00000000..0231b4da
--- /dev/null
+++ b/images/reference/youtube.svg
@@ -0,0 +1,67 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!-- Created with Inkscape (http://www.inkscape.org/) -->
+
+<svg
+   xmlns:dc="http://purl.org/dc/elements/1.1/"
+   xmlns:cc="http://creativecommons.org/ns#"
+   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+   xmlns:svg="http://www.w3.org/2000/svg"
+   xmlns="http://www.w3.org/2000/svg"
+   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
+   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
+   version="1.1"
+   id="svg2"
+   xml:space="preserve"
+   width="161.98"
+   height="113.38667"
+   viewBox="0 0 161.98 113.38667"
+   sodipodi:docname="youtube.svg"
+   inkscape:version="0.92.1 r15371"><metadata
+     id="metadata8"><rdf:RDF><cc:Work
+         rdf:about=""><dc:format>image/svg+xml</dc:format><dc:type
+           rdf:resource="http://purl.org/dc/dcmitype/StillImage" /><dc:title></dc:title></cc:Work></rdf:RDF></metadata><defs
+     id="defs6"><clipPath
+       clipPathUnits="userSpaceOnUse"
+       id="clipPath18"><path
+         d="M 0,255.118 H 550.024 V 0 H 0 Z"
+         id="path16"
+         inkscape:connector-curvature="0" /></clipPath></defs><sodipodi:namedview
+     pagecolor="#ffffff"
+     bordercolor="#666666"
+     borderopacity="1"
+     objecttolerance="10"
+     gridtolerance="10"
+     guidetolerance="10"
+     inkscape:pageopacity="0"
+     inkscape:pageshadow="2"
+     inkscape:window-width="1366"
+     inkscape:window-height="739"
+     id="namedview4"
+     showgrid="false"
+     fit-margin-top="0"
+     fit-margin-left="0"
+     fit-margin-right="0"
+     fit-margin-bottom="0"
+     inkscape:zoom="0.49770554"
+     inkscape:cx="366.68268"
+     inkscape:cy="170.07866"
+     inkscape:window-x="0"
+     inkscape:window-y="0"
+     inkscape:window-maximized="1"
+     inkscape:current-layer="g10" /><g
+     id="g10"
+     inkscape:groupmode="layer"
+     inkscape:label="yt_logo_rgb_light"
+     transform="matrix(1.3333333,0,0,-1.3333333,0,113.38668)"><g
+       id="g20"
+       transform="translate(118.946,71.761009)"><path
+         d="m 0,0 c -1.397,5.227 -5.514,9.343 -10.741,10.74 -9.474,2.539 -47.463,2.539 -47.463,2.539 0,0 -37.989,0 -47.463,-2.539 -5.227,-1.397 -9.344,-5.513 -10.741,-10.74 -2.538,-9.474 -2.538,-29.241 -2.538,-29.241 0,0 0,-19.767 2.538,-29.24 1.397,-5.227 5.514,-9.344 10.741,-10.741 9.474,-2.539 47.463,-2.539 47.463,-2.539 0,0 37.989,0 47.463,2.539 5.227,1.397 9.344,5.514 10.741,10.741 2.539,9.473 2.539,29.24 2.539,29.24 0,0 0,19.767 -2.539,29.241"
+         style="fill:#ff0000;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path22"
+         inkscape:connector-curvature="0" /></g><g
+       id="g24"
+       transform="translate(48.5934,24.297109)"><path
+         d="M 0,0 31.562,18.223 0,36.446 Z"
+         style="fill:#ffffff;fill-opacity:1;fill-rule:nonzero;stroke:none"
+         id="path26"
+         inkscape:connector-curvature="0" /></g></g></svg>
\ No newline at end of file
diff --git a/images/svg/mastodon.svg b/images/svg/mastodon.svg
index 701a6214..a54db8a9 100644
--- a/images/svg/mastodon.svg
+++ b/images/svg/mastodon.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" fill="#2b90d9" aria-label="Mastodon" role="img" viewBox="0 0 512 512"><rect width="512" height="512" fill="#fff" rx="15%"/><circle cx="256" cy="256" r="200"/><g id="b"><path fill="#fff" d="M411 215v84c0 24-21 41-42 41h-60c12-10 18-22 19-37v-88c2-55 81-55 83 0"/><circle id="a" cx="369" cy="220" r="11"/><use y="36" xlink:href="#a"/><use y="72" xlink:href="#a"/></g><use transform="rotate(180 312 246.5)" xlink:href="#b"/><use transform="matrix(-1 0 0 1 510 0)" xlink:href="#b"/></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512" aria-label="Mastodon" role="img"><rect fill="#fff" height="512" rx="15%" width="512"/><path d="M424 294c-6 26-47 55-94 61-24 3-48 5-74 4-42-2-75-10-75-10l1 12c5 41 41 44 75 45s64-8 64-8l2 30s-24 13-67 16c-23 1-53-1-86-10-74-19-87-98-89-177v-65c0-81 53-105 53-105 27-13 73-18 121-18h2c48 0 94 5 121 18 0 0 53 24 53 105 0 0 1 60-7 102" fill="#3088d4"/><path d="M368 198v99h-39v-96c0-20-8-30-25-30-19 0-29 12-29 36v52h-38v-52c0-24-10-36-29-36-17 0-25 10-25 30v96h-39v-99c0-20 5-36 15-48 11-12 25-18 42-18 20 0 35 8 45 23l10 17 10-17c10-15 25-23 45-23 17 0 31 6 42 18 10 12 15 28 15 48" fill="#fff"/></svg>
\ No newline at end of file
diff --git a/images/svg/rss.svg b/images/svg/rss.svg
index 9e1b0046..1d2a4249 100644
--- a/images/svg/rss.svg
+++ b/images/svg/rss.svg
@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" aria-label="RSS" role="img" viewBox="0 0 512 512"><rect width="512" height="512" fill="orange" rx="15%"/><circle cx="123" cy="389" r="67" fill="#fff"/><path fill="none" stroke="#fff" stroke-width="68" d="M56 89c203 0 367 164 367 367m-133 0c0-128-105-234-234-234"/></svg>
\ No newline at end of file
+<svg xmlns="http://www.w3.org/2000/svg" aria-label="RSS" role="img" viewBox="0 0 512 512"><rect width="512" height="512" fill="orange" rx="15%"/><path fill="none" stroke="#fff" stroke-width="68" d="M56 89a367 367 0 0 1 367 367m-133 0A235 235 0 0 0 56 222m34 167a32 32 0 0 1 66 0 32 32 0 0 1-66 0"/></svg>
\ No newline at end of file
diff --git a/images/svg/twitter.svg b/images/svg/twitter.svg
index b553c68d..a3a49a7a 100644
--- a/images/svg/twitter.svg
+++ b/images/svg/twitter.svg
@@ -1 +1 @@
-<svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" aria-label="Twitter" role="img"><rect fill="#1da1f3" height="512" rx="15%" width="512"/><path d="m465 135c-14 7-31 11-47 13 17-10 30-27 37-46-15 10-34 16-52 20a83 83 0 0 0 -141 75c-68-3-129-35-169-85a80 80 0 0 0 26 109c-13 0-26-4-37-9 0 39 28 72 65 80-12 3-25 4-37 2 10 33 41 57 77 57-42 30-77 38-122 34 170 111 378-32 359-208 16-11 30-25 41-42z" fill="#fff"/></svg>
\ No newline at end of file
+<svg viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" aria-label="Twitter" role="img"><rect fill="#1da1f3" height="512" rx="15%" width="512"/><path fill="#fff" d="M465 135a150 150 0 0 1-47 13 83 83 0 0 0 37-46 150 150 0 0 1-52 20 83 83 0 0 0-141 75 230 230 0 0 1-169-85 80 80 0 0 0 26 109 83 83 0 0 1-37-9 83 83 0 0 0 65 80 83 83 0 0 1-37 2 83 83 0 0 0 77 57 150 150 0 0 1-122 34 230 230 0 0 0 359-208 150 150 0 0 0 41-42"/></svg>
\ No newline at end of file