title: iOS fitbit logout
body: <p>By using the Fitbit documentation from <a href="https://dev.fitbit.com/docs/oauth2/" rel="nofollow noreferrer">here</a>. I have succeeded upon the Fitbit authentication in my app with token expire time <code>expires_in=604800</code>. I got stuck by how to logout from the logged in account. Is there any Fitbit endpoint to do that or required to revoke the authentication token how could we achieve the logout?</p>
  
  <p>Any Help much appreciated.</p>