update: readme update

README.rst

@@ -49,8 +49,8 @@ commands from the UI, a user must be created:
 Then, you must log in with this user at http://discovery.local.openedx.io/admin.
 
 Alternatively, you can log in with oauth2 using a pre-existing user created on the LMS/CMS by accessing
-http(s)://discovery.<your lms host>/login. To do so, the proper domain names must exist and point to
-the production server.
+http(s)://discovery.<your lms host>/login. The user must be reassigned the ``superuser`` and ``is_staff`` status. 
+To do so, the proper domain names must exist and point to the production server.
 
 Index configuration
 ~~~~~~~~~~~~~~~~~~~