Re-indent with 2 spaces rather than 4 per style raywenderlich.com Swift Style Guidelines
Correct unwrapped optional variable name per updated raywenderlich.com Swift Style Guidelines (http://www.raywenderlich.com/90974/swift-style-guide-december-2014-update)
Merge pull request #1 from obuseme/master

Tweaks to match raywenderlich.com Swift Style guide