Compatible problemes(crashes) on iOS 10

[maxhis]

1. 滑动时会crash：
   
2. 第二次进入PageController时menuHeight会变得不正常。

Tested with Xcode 8 & swift 3.0

[maxhis]

Swift version no longer under maintain? Already switch to OC version, works fine.

Thanks for your great work.

[wangmchn]

Sorry, too busy these days and dont have time to make any enhancements.
I will make the swift version better when have time. 😭