title: Where do I find the official "Sign in with Facebook button"?
body: <p>I am looking for the official "Sign in with Facebook" Button but I cannot find it on their website.
  E.g. Spotify uses it</p>
  
  <blockquote>
    <p><a href="https://www.spotify.com/de/" rel="nofollow">https://www.spotify.com/de/</a>
    -> "Anmelden"
    -> "Mit Facebook anmelden"</p>
  </blockquote>
  
  <p>I found this one here: </p>
  
  <p><a href="https://developers.facebook.com/docs/reference/plugins/login/" rel="nofollow">https://developers.facebook.com/docs/reference/plugins/login/</a></p>
  
  <p>but its not the one I am looking for.
  That one is pretty lame to be honest.</p>
  
  <p>Does anyone have an idea where I can find it - or is the one Spotify e.g. uses not even official?</p>
  
  <p>Thanks for any help.</p>