title: Adding Tabbar Controller Icon IPhone
body: <p>I am adding a viewController to a TabBarController.  When I add a ViewController from the custom class and Nib, it''s icon does not show up in the tabBar.</p>
  
  <p>If I initialize like this the icon does not show up.</p>
  
  <pre><code>viewController = [[FlashCardViewController alloc] initWithNibName:@"FlashCardViewController"  bundle:[NSBundle mainBundle]];
  </code></pre>
  
  <p>But creating a generic viewController works.</p>
  
  <pre><code>viewController = [[UIViewController alloc] initWithNibName:nil  bundle:nil];
  </code></pre>
  
  <p>Here we add the image and title.</p>
  
  <pre><code>viewController.title = @"Quiz";
  viewController.tabBarItem.image = [UIImage imageNamed:@"magnifying-glass.png"];
  </code></pre>
  
  <p>How can I get the icon to display if load from a NIB?</p>