title: Best way of using Twitter Digits with Firebase
body: <p>I have a React-Native app that uses Twitter Digits to authenticate.
  After I auth, I get the response object of the auth 1.0 headers:</p>
  
  <pre><code>Object {X-Auth-Service-Provider: "https://api.digits.com/1.1/sdk/account.json", X-Verify-Credentials-Authorization: "OAuth ..."}
  </code></pre>
  
  <p>Does someone knows how to use these credentials to authenticate with firebase?</p>