title: Converting an iPhone app to Universal in Xcode 4
body: <p>I could use a little clarity here.
  I've opened a project that is a completed iPhone app. Then selected the target, selected "Universal" from the Summary/Devices dropdown, and followed the prompt to "Make a Universal App."
  Xcode created a folder "iPad" with the file "MainWindow-iPad.xib" within.
  Fine.</p>
  
  <p>Now I duplicated all of my other nib files, and added "-iPad" after their name. I.e. "MySpecialVC.xib" was duped and renamed "MySpecialVC-iPad.xib." The thought was that Xcode knows some zoodoo about finding the correct xib for the device.
  Not so fine.</p>
  
  <p>Then I read that the "-iPad" had to be "~ipad" (tilde, then lower-case ipad). This solved the problem with some of the xibs, <strong>but not all of them</strong>.</p>
  
  <p>Dang if I can't figure this out. Is there a RIGHT way to do this?</p>