Aligned to guideline and path optimized Airbnb, Amazon, Authy, Badoo and Bitcoin. (#98)

* Visually centered a few icons, some new paths and optimizations.

Apple - Visually centered and change the path to more a accurate one.
Bytes: 1011 —> 580.

Dropbox - Visually centered and change the path to fix point alignment.
Bytes: 338 —> 350.

Twitter - Visually centered.
Bytes: 425 —> 431.

Ubuntu - Visually centered and change the path and color to a more
accurate one.
Bytes: 755 —> 674.

Vimeo - Visually centered.
Bytes: 375 —> 379.

WhatsApp - Visually centered and change the path and color to more a
accurate one.
Bytes: 646 —> 611.

Windows - Visually centered and change the path to fix the lines
between shapes.
Bytes: 274 —> 284.

Hope this helps.

FYI: Wikicommons have good SVG shapes and most companies have brand
guidelines with accurate logo renditions and colors.

* Removed newlines, fixed Ubuntu color and updated ReadMe and Twitter PNG.

* Twitter PNG Artifacts Fix.

* Optimizations and new color palettes.

Apple - New color palette that better represents the brand, and tiny
bit smaller.

Ubuntu - I keep finding ways to make this one smaller.

Wikipedia - New color palette that better represents the brand, and bit
smaller.

* Update

* Update drama

* Solving conflicts

* Solved conflicts.

* Optimizations and new color palettes

Apple - New color palette that better represents the brand, and tiny
bit smaller.

Ubuntu - I keep finding ways to make this one smaller.

Wikipedia - New color palette that better represents the brand, and bit
smaller.

* More Ubuntu optimizations.

Learning SVG as we go.

* Revert "More Ubuntu optimizations."

This reverts commit 74c1a45959.

* More Ubuntu Optimizations.

* Guidelines Folder.

* Guidelines.

Added guidelines with instructions.

* Revert "Guidelines."

This reverts commit eb30dfe163.

* Revert "Revert "Guidelines.""

This reverts commit 76edce25ec.

* Removed guidelines for small squares.

* Aligned to guideline and path optimized Airbnb, Amazon, Authy, Badoo and Bitcoin.

All were aligned accordingly and optimized to the following percentages:

Airbnb - 43%
Amazon - 0%
Authy - 38%
Badoo - 23%
Bitcoin + 1%

I’ll update Readme.

* Fixed Amazon radius. Whops.

images/svg/authy.svg

@@ -1 +1 @@
-<svg xmlns="http://www.w3.org/2000/svg" fill="#fff" aria-label="Authy" role="img" viewBox="0 0 512 512"><rect width="512" height="512" fill="#ec1c24" rx="15%"/><path d="M234 201.8l61.4 61.3a22.7 22.7 0 0 0 32.2-32l-61.4-61.5a114.7 114.7 0 0 0-161-1.1l-.6.6-.5.5-1.1 1.2a114.8 114.8 0 0 0 2.2 159.8l61.4 61.4a22.7 22.7 0 0 0 32.1-32.1l-61.4-61.4a69.2 69.2 0 0 1-.5-97.3 69.2 69.2 0 0 1 97.2.6zm79.3-81.8a22.7 22.7 0 0 0 0 32.2l61.4 61.3a69.3 69.3 0 0 1 .5 97.3 69.2 69.2 0 0 1-97.3-.6L216.6 249a22.7 22.7 0 1 0-32.2 32.1l61.4 61.4c44 44 115 44.6 159.8 2.2l1.2-1 .5-.7.6-.5 1.1-1.2a114.7 114.7 0 0 0-2.2-159.8L345.4 120a22.7 22.7 0 0 0-32.1 0z"/></svg>
+<svg stroke-linecap="round" viewBox="0 0 512 512" xmlns="http://www.w3.org/2000/svg" aria-label="Authy" role="img"><rect fill="#ec1c24" height="512" rx="15%" width="512"/><path d="m179 381-65-65a97 97 0 0 1 0-134c34-35 98-36 131-4l69 69" fill="none" stroke="#fff" stroke-width="46"/><path d="m333 131 65 65c35 36 35 96 0 134-34 34-99 36-132 4l-68-69" fill="none" stroke="#fff" stroke-width="46"/></svg>