title: How to make instagram login with AWS Cognito Federated Identities
body: <p>I am trying to implement social media login with AWS Cognito (Mobile services)for iOS app.AWS directly supports login with Amazon, Facebook, Google+ and Twitter.  But i want to implement instagram login with AWS Cognito. How can I achieve this. Please look at the <a href="https://i.stack.imgur.com/pKr8S.png" rel="noreferrer">Screen Shot</a>, 
  In the screen shot you will see provider sections like Amazon,facebook, google and Twitter and the rest of the three are for other. Please let me know which one will work for INSTAGRAM login in rest of the three provider OpenID, SAML and Custom. And how to implement it??</p>