Added more admin pages and wrote readme.

Updated config.
Redid OAuth package. Redid "add content" page. Added file uploading and
adding from existing resources.
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
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.
Started with a content rendering javascript library
Have image rendering going via JS.
JS based content rendering. Playlist rendering. Javascript OAuth signing.
Added pinterest share button for images.
Fixed encoding for pinterest
Fixed embedding and sharing of videos
Added image editing and caption track uploading.
Added levels 2 and 3.
File upload restrictions. Add any content you see to a course. Profile pictures.
Reformatted annotations. Caption track enabling/disabling.
Got annotations working. You can upload .json annotation files.
Content header reformatting. Image annotations. Content as an annotation.