High level lesson outline
Add model functionality update/migration section
MVC video with focus on controller obesity :)
Add link to importance of tests video

Also new screenshot for controller obesity video.
Contacts app initial commit
Contacts app stub
Removed the rails app from here. Moved it to separate repo.
Add link to contacts rails app
Reordering stuff.
Ignore DS_Store files
Merge remote-tracking branch 'ga/master'
Add intro to models lesson