title: self.navigationItem.titleView does not work with tabbed application template
body: <p>I am new to developing for iOS, but I am completely stumped with this.</p>
  
  <p>Steps:</p>
  
  <ol>
  <li>In Xcode, create a new tabbed application for iPhone.</li>
  <li>Go into first subview and drag a Navigation Bar to the view.</li>
  <li>Go into viewDidLoad and add this (assuming you have dropped logo.png into the project structure):</li>
  </ol>
  
  <p><code>self.navigationItem.titleView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"logo.png"]];</code></p>
  
  <p>Render the view - it does not work. No custom image replaces the default "Title" text.</p>
  
  <p>I don't understand. Why does this not work? What do I have to do to make it work? Is there something fundamentally different I need to be doing or a concept I am not grasping fully here?</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>I have figured out that the code above works. You just need to embed your view inside a navigation controller. Click on the first tabbed view, then do <code>Editor &gt; Embed In &gt; Navigation Controller</code>. The code will then work, and you can continue moving forward. Just embed each tab in a navigation controller using the method above and you should be good to go!</p>