title: SLServiceTypeFacebook setInitialText is not working
body: <p>I am trying to share a text on Facebook with SLServiceTypeFacebook on IOS 8.3. But the popup text box displayed empty. I want it to be displayed with text in it. Below you can see the code I use for that.</p>
  
  <pre><code> if([SLComposeViewController isAvailableForServiceType:SLServiceTypeFacebook]) 
   {
         SLComposeViewController *controller = [SLComposeViewController composeViewControllerForServiceType:SLServiceTypeFacebook];
  
         [controller setInitialText:@"First post from my iPhone app"];
         [self presentViewController:controller animated:YES completion:Nil];
    }
  </code></pre>