title: Perform Segue on ViewDidLoad
body: <p>In iOS 5 I have a Storyboard with a modal view controller, that I would like to display if its the user's first time in the app, after that I would like to skip this view controller.</p>
  
  <p>I set an NSDefault key to handle this but when I check to see if this is set and then use performSegueWithIdentifier to initiate the segue, nothing happens.  If i put this segue behind a button it works fine...</p>