title: iOS: Trying to add Navigation Bar to Modal UITableViewController
body: <p>I'm following the CoreDataRecipes app for modaly showing the add screen when I want to add a new item. However I cannot get the bar to display at the top so I can press 'Done' or 'Cancel'.</p>
  
  <p>In the xib calling the modal controller I have the + button linked to modally sliding up the controller via IB.</p>
  
  <p>I have the below in my modal controller</p>
  
  <pre><code>self.navigationItem.title = @"Add";
  
      self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Cancel" style:UIBarButtonItemStyleBordered target:self action:@selector(cancel)];
      self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Save" style:UIBarButtonItemStyleDone target:self action:@selector(save)];
      self.navigationController.navigationBarHidden = NO;
  </code></pre>
  
  <p>In my viewDidLoad</p>
  
  <p>The modal controller displays fine except there is no bar so I cannot leave that screen.</p>