android 4.4.4 longTap event is not work

In android 4.4.4, touchmove event is very easy to trigger, so longTap event is not work.
android 4.4.4 longTap event is not work

In android 4.4.4, touchmove event is very easy to trigger, so longTap event is not work.
Merge pull request #4 from caiwf/master

解决三星安卓touchmove过于敏感导致longTap失效问题