title: Sanity Check an MKCoordinateRegion
body: <p>Is there any way to quickly test whether an <code>MKCoordinateRegion</code> is good or not? I've swapped  latitude for longitude and caused an application crash. I'd like to be able to see whether it's possible to perform a <code>setRegion</code> before I actually do it. Will <code>MKCoordinateRegionMake</code> test the values I give it? </p>
  
  <p>Thanks.</p>