title: Can't promote posts
body: <p>Who know how use graph api for promotion posts? I mean feature from next link: 
  <a href="https://www.facebook.com/help/promote" rel="nofollow noreferrer">https://www.facebook.com/help/promote</a></p>
  
  <p>I should from my app can send a post to some fan page and then able to "Promote" this post.</p>