title: CFString convert to String for kUTTypeImage in Swift 2.0 & XCODE 7
body: <p>I got an error convert CFString. Error message is:</p>
  
  <blockquote>
    <p>Cannot assign a value of type '[CFString]' to a value of type '[String].</p>
  </blockquote>
  
  <p>How to fix?</p>
  
  <pre><code>picker.sourceType = UIImagePickerControllerSourceType.Camera
  picker.allowsEditing = false
  picker.mediaTypes = [kUTTypeImage] //Error Message : Cannot assign a value of type '[CFString]' to a value of type '[String]'
  picker.delegate = self
  picker.modalPresentationStyle = .Popover
  presentViewController(picker, animated: true, completion: nil)//
  </code></pre>