title: Get real id of facebook friends
body: <p>Currently when user try to join my app with Facebook I get his info with his real id. I want to get his friends. Currently i can get them only with taggable_friends. But there the id is not real... I need the real id, because I want the user to send message to other Facebook users in my app and when the other join my app, I will use his id to find in my database this message.</p>
  
  <p>If you have any idea to make this connection, please help me.</p>