title: Replace Window rootViewController with another view controller using Storyboard
body: <p>I am new to Storyboard-ing, been using IB mostly. I have an initial temporary View Controller (let's call it <code>BootstrapViewController</code>) which job is solely to load data from a webservice, then hand over control to a UITabViewController. The data is required to determine what tab items to show.</p>
  
  <p>In non-Storyboard world, I just do:</p>
  
  <pre><code>// Do whatever you need to UITabViewController, then call this
  [UIApplication sharedApplication].keyWindow.rootViewController = myTabVC;
  </code></pre>
  
  <p>Is this possible using Storyboard? I tried creating a named segue from BootstrapViewController to the tab view controller, then calling <code>performSegueWithIdentifier</code>, no luck.</p>