Fixing issue #61. Now the controller doesn't get stuck anymore if the notification center is pulled down while panning.
Fixing issue #61. Now the controller doesn't get stuck anymore if the notification center is pulled down while panning.

wjszf/PKRevealController,adonoho/PKRevealController,leasual/PKRevealController,chieryw/PKRevealController,xingyuniu/PKRevealController,adonoho/PKRevealController,wubangjunjava/PKRevealController,cnbin/PKRevealController,andyFang1688/PKRevealController,duanhjlt/PKRevealController,chengkaizone/PKRevealController,emodeqidao/PKRevealController,AbooJan/PKRevealController,adonoho/PKRevealController,nitxc/PKRevealController,RyanTech/PKRevealController,SuPair/PKRevealController,SummerHF/PKRevealController,BlessNeo/PKRevealController,AlanJN/PKRevealController,wpostma/PKRevealControllerWP,policp/PKRevealController,SanChain/PKRevealController,pengleelove/PKRevealController,xiaotaijun/PKRevealController,pkluz/PKRevealController,libiao88/PKRevealController,wayne798/PKRevealController,hanangellove/PKRevealController,ramoslin02/PKRevealController