added create super user recipe

docs/source/installation.rst

@@ -233,4 +233,14 @@ Need to delete your Elastic Search index and start over?
 
     curl -XDELETE 'http://localhost:9201/flightdeck'
     ./manage.py cron setup_mapping
-    ./manage.py cron index_all
+    ./manage.py cron index_all
+    
+    
+Create a local super user account
+---------------------------------
+
+If you imported your database then you will need to create a user.
+
+    ./manage.py createsuperuser
+    
+