Fixed the pan gesture
Fixed the pan gesture

- it won't block the touches in views behind

hulu001/GTScrollNavigationBar,wongzigii/GTScrollNavigationBar,niuxinghua/GTScrollNavigationBar,luugiathuy/GTScrollNavigationBar,liuruxian/GTScrollNavigationBar,wongzigii/GTScrollNavigationBar,wongzigii/GTScrollNavigationBar,luugiathuy/GTScrollNavigationBar,wongzigii/GTScrollNavigationBar,liuruxian/GTScrollNavigationBar,niuxinghua/GTScrollNavigationBar,niuxinghua/GTScrollNavigationBar,niuxinghua/GTScrollNavigationBar,hulu001/GTScrollNavigationBar