add two optional response

Omniauth_API_Document.md

@@ -59,7 +59,12 @@
         "token_type": "bearer",
         "expires_in": 172800,
         "refresh_token": "9147a9fd7ecee6c8cada39805429d81f95fda40a9232dd5267b432fb5a3cb581"
-      }
+      },
+      "freeze_at": "2017-07-13T08:35:04.558Z", # optional
+      "unconfirmed_email_info": {
+        "email": "don.shieh2@gmail.com",
+        "bounced": true
+      } # optional
     }
 
 #### Fail Response