title: Creating an Drop Pin MKPinAnnotation supporting dragging like the Drop Pin in Maps App
body: <p>I wonder if it's possible to create an MKPinAnnotation in a Custom MKMapView, which answers to touch and drag just like the "Drop Pin" annotation in the Maps App.</p>
  
  <p>I would like a way to drop a pin at a location given by the GPS. Then let the user fine tune the exact location by touching the Pin and dragging it right, if the GPS is a bit too inaccurate.</p>
  
  <p>Any help is appreciated, or information if this is impossible with allowed SDKs.</p>