title: how to change the UIImagePickerController crop frame
body: <p>when opening working with an UIImagePickerController and setting  allowsImageEditing = YES; there is a default cropping frame that is 320x320. In my case, I would like to setup that cropping frame to 320x240 for images that are landscape, and 240x320 for images that are portrait. However, I haven't been able to find a way to change that 320x320 frame that is used when editing /cropping a photo. Has any of you found a way to do it?</p>
  
  <p>Thanks!</p>