++RAC to xctool branch
++RAC to xctool branch

fxd/ReactiveViewModel,ReactiveCocoa/ReactiveViewModel,ReactiveCocoa/ReactiveViewModel,nickcheng/ReactiveViewModel,ashfurrow/ReactiveViewModel,nickcheng/ReactiveViewModel,nickcheng/ReactiveViewModel,jackgao2016/ReactiveViewModel,ashfurrow/ReactiveViewModel,iguchunhui/ReactiveViewModel,fxd/ReactiveViewModel,TeehanLax/ReactiveViewModel,takeshineshiro/ReactiveViewModel,SummerHanada/ReactiveViewModel,takeshineshiro/ReactiveViewModel,jackgao2016/ReactiveViewModel,iguchunhui/ReactiveViewModel,SummerHanada/ReactiveViewModel