title: facebook deep linking (app links) to ios app doesn't work
body: <p>I can't figure out how to make facebook, when sharing url with my website, to show "Open in the My app" button. (like in documentation <a href="https://developers.facebook.com/docs/applinks/ios" rel="nofollow">https://developers.facebook.com/docs/applinks/ios</a>)</p>
  
  <p>I'm adding to the header</p>
  
  <pre><code>&lt;meta property="al:ios:url" content="myapp://" /&gt;
  &lt;meta property="al:ios:app_store_id" content="id..." /&gt;
  &lt;meta property="al:ios:app_name" content="App name" /&gt;
  </code></pre>
  
  <p>Deep linking button is switched on in the dev.facebook settings.</p>
  
  <p>My app have myapp:// in the schema and is opened with such a url.</p>
  
  <p>Need i something more?</p>