Add Microsoft (#262) (#289)

- Added the Microsoft Logo
- Updated README.md
- Added PNG to Reference
- Updated index.md

images/reference/index.md

@@ -179,4 +179,5 @@ Where possible this links to the organisation's brand guidelines page.
 | <img src="/images/svg/javascript.svg" width="256" /> | <img src="/images/reference/javascript.png" width="256" />  | https://commons.wikimedia.org/wiki/File:Unofficial_JavaScript_logo_2.svg |
 | <img src="/images/svg/google_drive.svg" width="256" /> | <img src="/images/reference/google_drive.jpg" width="256" /> | https://developers.google.com/drive/api/v2/branding |
 | <img src="/images/svg/ansible.svg" width="256" /> | <img src="/images/reference/ansible.svg" width="256" />  | https://www.ansible.com/logos |
-| <img src="/images/svg/sentry.svg" width="256"/> | <img src="/images/reference/sentry.svg" width="256" /> | https://sentry.io/branding/ |
+| <img src="/images/svg/sentry.svg" width="256"/> | <img src="/images/reference/sentry.svg" width="256" /> | https://sentry.io/branding/ |
+| <img src="/images/svg/microsoft.svg" width="256"/> | <img src="/images/svg/reference/microsoft.png" width="256" | https://news.microsoft.com/mssurfacehub_logo_stacked_c-white_rgb/ |