title: get all the friends and all mutual friends with graph-api
body: <p><br>
  I'm trying to get all friends of a user, and mutual friends. I'm using Graph API V2.4.<br>
  first I used  <code>... /me/friends</code> but i  discover this method return only friends with use my app. I read that is used <code>.../me/taggable_friends</code> and returned all friends, but not return id friend, return other id.<br>
  I read about all_mutual_friends but I cannot use this method because i dont have friend ids.<br>
  Anybody know any solution ?</p>