Merge pull request #1 from madrobby/master

merge latest master
resolve $.ajaxJSONP's memory leak

resolve $.ajaxJSONP's memory leak
Merge pull request #2 from madrobby/master

merge latest version
解决两个手指同时点击时的zepto错误
Merge pull request #1 from tom-wang/master

修复两个手指同时点击时出现trigger报错的问题