title: How can I log out of Facebook when using OmniAuth?
body: <p>I have a RoR app using omniauth. I want to allow the user to log out so that they can sign in with a different Facebook user, but no matter what I do, once a user logs into FB, it keeps them logged in.</p>
  
  <p>I have tried:
      <a href="https://www.facebook.com/logout.php?next=" rel="nofollow">https://www.facebook.com/logout.php?next=</a>&amp;access_token=</p>
  
  <p>To no avail. I also tried the reauth option for omniauth-facebook but that resulted in the user being brought to FB rather than to my specified redirect URL.</p>