Update Rakefile for iOS 7.1
Update Rakefile

Remove iOS 5.0
Add iOS 6.1
Update README.md
Merge pull request #5 from litesystems/enhancement/5

Travis CI でのテスト環境をアップデートする
Add .podspec
Update version number
Merge pull request #7 from litesystems/feature/7

CocoaPods 対応
Update
Merge pull request #8 from ymyzk/enhancement/8

コードの整理
Merge branch 'develop'

Conflicts:
	README.md