Short file url extension docs
Remove Social Buttons Page

- Point to the button builder, and the github repo instead of
  trying to document the buttons in developer docs.
- Added a helper to pull in environment variables
- We should read lanai_hostname, and local_hostanme from ENV
  vars instead of trying to configure them.
Merge branch 'new-docs' of git.int.sfo01.mml:mxml/api-spec into new_docs
New button docs and new env conf
Forgot to delete this section
Add oEmbed to the docs
Merge branch 'new-docs' of github.com:appdotnet/api-spec into HEAD