title: iOS: Refactor Large XIB into a few smaller XIB files for speed
body: <p>When watching some of the <code>WWDC2011 videos</code> it was mentioned that large <code>nib files</code> can make your app take some time to load.  This isn't necessarily the case with my app, but I feel like my <code>nib</code> is fairly large.  The suggestion on the video was to make that large <code>nib</code> into a few smaller ones for quick load time.</p>
  
  <p>Maybe I am missing something, but how would I split up a large <code>nib</code> into smaller ones?  My <code>UIViewController</code> will only load one <code>nib</code> when it inits.  Is there another way to do it will multiple files?</p>