title: How do I get the currently authenticated user with Ember simple auth?
body: <p>If a user starts out in my app unauthenticated and then logs in, I can have my Rails back-end return the user data, and create a User model in my Ember app.</p>
  
  <p>However, what if a user starts out in the app authenticated? How can I use <code>session</code> to fetch the user's details from Rails?</p>
  
  <p>I'm using the ember-simple-auth-devise authenticator.</p>