Quote style.
Cleanup.
Move Bundler stuff app -> config.ru
Bundler.require cleanup
Whitespace.
Trailing commas
Explicitly require gems.

http://myronmars.to/n/dev-blog/2012/12/5-reasons-to-avoid-bundler-require
Cleanup requires.

Works both in dev and prod without requiring rubygems or bundler or bundler/setup, but since I haven't taken the time to figure out why, I'm leaving them in.