title: Xcode custom segue animation
body: <p>I have a problem with the transition animation between two storyboard controllers. 
  I have a singleView project with two view controllers in the storyboard.</p>
  
  <p>Now I wand to make a custom transition animation:</p>
  
  <ul>
  <li>my current view controller should disappear to the left </li>
  <li>the new view controller should come from the right</li>
  </ul>
  
  <p>I have already a <code>UIStoryboardSegue</code> class.</p>
  
  <p>But what should I write in the <code>-(void)perform{}</code> method??</p>
  
  <p>Thanks a lot,</p>
  
  <p>Jonas.</p>