Incorporate RequireJS

This is roughly equivalent to the commit in the original Roostagram that
can be found here:

https://github.com/bocoup-education/roost-chicago-2014-app/tree/662884071e22097a4b52de4615aed95876436bca

Had to add "src/" before a few things to get it to work, could be an IIS
Express vs connect thing.
Convert to "CommonJS style" AMD

This is roughly equivalent to the commit in the original Roostagram that
can be found here:

https://github.com/bocoup-education/roost-chicago-2014-app/tree/04ade31423d133908df065d70030abc7fc1ce910