Merge pull request #3 from mizoR/travis

Start CI with travis
s/ViewController/MainViewController
Merge pull request #4 from mizoR/reset-project

s/ViewController/MainViewController
UIAlertController を使ってみた

UIAlertView はオワコンらしい
Xcode: Version 6.1.1 (6A2008a) では動かない
xcodebuild に戻した