title: Which API to use for 'Login with Instagram' button
body: <p>I'm trying to add a 'Login with Instagram' button to my app. I'm having trouble working out which API to use, should I use the <a href="https://www.instagram.com/developer/" rel="nofollow noreferrer">old process</a> or the new Graph API?</p>
  
  <p>The Graph API docs don't reference Instagram login, only Facebook.</p>