title: Angularfire login with Facebook not recieving extended permissions
body: <p>I had this working perfectly before upgrading to angularfire 0.9</p>
  
  <p><strong>I want to request the user's email address from facebook</strong>.  Facebook has already granted me permission to ask for this from my users.  I am using the code below to login with facebook.  It all works perfectly accept that it doesn't request the user's email.</p>
  
  <p>FYI: I am using the Angularfire-seed codebase</p>
  
  <pre><code>loginWithFacebook: function() {
        return auth.$authWithOAuthPopup("facebook", function(error, authData) { /* Your Code */ }, {
          remember: "sessionOnly",
          scope: "email, user_likes"
        });
      },
  </code></pre>
  
  <p>thanks in advance!</p>
  
  <hr>
  
  <p><strong>In response to Mike's answer below, i've noticed that the function does not run at all.  not sure what the issue is.</strong></p>
  
  <pre><code>var ref = new Firebase("https://&lt;your-firebase&gt;.firebaseio.com");
  ref.$authWithOAuthPopup("facebook", function(error, authData) {
  
     //THIS CODE NEVER RUNS
  
     if (error) {
        console.log("Login Failed!", error);
     } else {
        console.log("Authenticated successfully with payload:", authData);
     }
  });
  </code></pre>