message: Added button press listener
diff: - (void)didMoveToWindow
  {
  [super didMoveToWindow];
  - UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:self.title style:UIBarButtonItemStylePlain target:nil action:nil];
  + UIBarButtonItem *item = [[UIBarButtonItem alloc] initWithTitle:self.title style:UIBarButtonItemStylePlain target:self action:@selector(buttonPressed)];
  [self.reactViewController.navigationItem setRightBarButtonItem:item animated:YES];
  }
  +-(void)buttonPressed
  +{
  +}
  +
  @end
  