title: Get StoryBoard instance of View Controller
body: <p>Example without storyboard:</p>
  
  <p>AppDelegate.h</p>
  
  <pre><code>@property (retain, nonatomic) UIViewController *leftController;
  </code></pre>
  
  <p>AppDelegate.m</p>
  
  <pre><code>self.leftController = [[LeftViewController alloc] initWithNibName:@"LeftViewController" bundle:nil];
  </code></pre>
  
  <p>OtherViewController:</p>
  
  <pre><code>//This is what I want do to in storyboards
  self.viewDeckController.leftController = (AppDelegate*)[[UIApplication sharedApplication] delegate].leftController;
  </code></pre>
  
  <p>How can I get that instance of leftController when using storyboards?</p>