React Native升级导致的bug：0.36.1->

1.error:jschelpers/JavaScriptCore.h file not found
解决：参见上篇文章， 升级cocoapods

2.error:Calling of '[-RCTUIManager setFrame:forView:]' which is deprecated 并且屏幕全白
解决：根据这篇issues中开发人员grabbou的说法,将react-native升级至0.42.2