Moved genres from user instance method to Genre Model. Added controller, features tests.
For users, removed favorite instance method logic, added favorite hasone assoc, added suggestions assoc.
Favoriting now uses has_many, not has_one. Added make favorite button.
Added made like buttons ajax, added fade out/in.
Like buttons target correct song on subsequent requests.
Added ajax to make favorite button, added foreign key to favorites assoc, separating it from gen songs assoc.
Added echonest/rdio example to show cm page.
favoriting working, rounds won working, starting fav-player.
Fav/challenger players don't interfere with on another.
Fav player now a song search, not playing gen. Songs can be replayed.
Added lead in. Styled titles, handles song not found case.
Favorites in footer now dynamic, last favorited songs.
Added challenge mode, merged from adding-challenge-mode.