// OPTION 1
  // Load from development server. Start the server from the repository root:
  //
  // $ npm start
  //
  // To run on device, change `localhost` to the IP address of your computer, and make sure your computer and
  // iOS device are on the same Wi-Fi network.
  //jsCodeLocation = [NSURL URLWithString:@"http://localhost:8081/index.ios.bundle"];

  // OPTION 2
  // Load from pre-bundled file on disk. To re-generate the static bundle, run
  //
  // $ curl http://localhost:8081/index.ios.bundle -o main.jsbundle
  //
  // and uncomment the next following line
  jsCodeLocation = [[NSBundle mainBundle] URLForResource:@"main" withExtension:@"jsbundle"];

$ ls iOS
AppDelegate.h   Base.lproj      Info.plist      main.m
AppDelegate.m   Images.xcassets main.jsbundle