Update React to 15.2.x
Update React to 15.2.x

ptmt/react-native-macos,ptmt/react-native-macos,ptmt/react-native-macos,ptmt/react-native-macos,ptmt/react-native-macos,ptmt/react-native-macos,ptmt/react-native-macos,ptmt/react-native-macos