Merge pull request #2 from wuhaixing/master

Redirect  to home when a loginned user requestes to index
Redid OAuth package. Redid add content page. Added file uploading and adding from existing resources.
Added more admin pages and wrote readme.
update config
Updated Readme w/ TOC
Added automatic thumbnail creation for images and videos. Refactored resource helper to flat map the nested futures.
Refactored content view header and added caching into models
Merge remote-tracking branch 'origin/master'
Added sharing with embed codes and google+ and twitter.
Added Dreyfus as a fixture. Updated stylesheet.
Updated gitignore
Added example configuration
Added PlayGraph wrapper and playlist creation page.