title: SFSafariViewController opens rather than native Facebook app for "login with Facebook"
body: <p>I am integrating <code>login with Facebook</code> functionality in my app. Before <code>iOS 9</code> it works like charm. </p>
  
  <p><strong>Before:</strong> If device has native facebook app installed and login, then <code>login with Facebook</code> button opens native app otherwise opens safari browser. </p>
  
  <p><strong>Now:</strong>
  If device has native facebook app installed and login, then <code>login with Facebook</code> button opens <code>SFSafariViewController</code> in app. </p>
  
  <p>I have updated facebook sdk to 4.7 (latest),</p>
  
  <p><strong>Update:</strong>  How should i disable <code>SFSafariViewController</code> from opening and open native app for login (if native app is available.)
  please help me what to do now. Thanks in Advanced</p>