message: Added children at correct index for primary ios tabbar
diff: - (void)insertReactSubview:(UIView *)subview atIndex:(NSInteger)atIndex
  {
  [super insertReactSubview:subview atIndex:atIndex];
  - [_tabBarController addChildViewController:[(NVTabBarItemView *) subview navigationController]];
  + NSMutableArray *controllers = [NSMutableArray arrayWithArray:[_tabBarController viewControllers]];
  + [controllers insertObject:[(NVTabBarItemView *) subview navigationController] atIndex:atIndex];
  + [_tabBarController setViewControllers:controllers];
  }
  - (void)removeReactSubview:(UIView *)subview
  