title: retrieve full list of friends using facebook API
body: <p>new 2.0 version has a paging that limit the numbers of friends at one request, which doesn't allow me to retrieve all friends at once although there's a parameter call 'limit', it can only be done by looping the 'offset' till the end. The problem is each user has different number of friends!</p>
  
  <p>I've been looking around for few hours but still don't have a solution.. </p>