Rejigged logic for ios7/8 notification differences
Rejigged logic for ios7/8 notification differences

IdleHandsApps/IHKeyboardAvoiding,orkenstein/IHKeyboardAvoiding,0x73/IHKeyboardAvoiding,nathankot/IHKeyboardAvoiding,hxx0215/IHKeyboardAvoiding,IdleHandsApps/IHKeyboardAvoiding,ikesyo/IHKeyboardAvoiding