title: presentViewController won't work with animated:NO
body: <p>I'm using <code>[self presentModalViewController:head animated:NO];</code> in ios 4.3 and looking for an alternative for ios 5 and up. I'd prefer using something universal for all iOS versions but <code>if (iOS is lower than 6)</code> can also be great. 
  My problem is that using <code>[self presentViewController:head animated:YES completion:nil];</code> as an alternative would work <strong>only</strong> if <code>animated</code> is set to <code>YES</code>. Any idea why? I don't want it to animate. Is there anything else I can use if I'm <strong>not</strong> using <code>StoryBoards</code> ?</p>