title: Adding a pin annotation to a map view on a long press in swift
body: <p>I'm trying to make an iPhone app which requires users to be able to long press on a place on a map view to drop a pin there. Does anybody know how this is done?</p>
  
  <p>The behaviour is observable in apple maps when you long press on the screen. It will drop a pin and present an annotation saying "dropped pin"</p>