Add LICENSE

Add LICENSE
Add Refreshing Check
Nothing
Add Refreshing Revoke
Modify Class Name
去除了刷新完毕后箭头突然出现的效果
完善刷新完毕后的效果
修复了“头部控件一直往下走位”的bug
修正了Footer显示在顶部的Bug
解决Xcode6下没有pch带来的影响
Fix Xcode6 Swift Problem
Update README.md
Remove unnecessary code
Remove unnecessary code
Remove unnecessary code

Remove unnecessary code
Fix iOS8 Compile Waring and Error
Merge remote-tracking branch 'MJRemote/master'
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