Feature/SK-1220 | Update server-functions readme (#756)

examples/server-functions/README.rst

@@ -1,11 +1,31 @@
 FEDn Project: Server functions toy example
 -----------------------------
 
-See server_functions.py for details.
+Beta useage will be available by request from FEDn 0.20.0 and onward.
 
-README Will be updated after studio update.
+See server_functions.py for details on server-functionality can be supplied.
 
-To run with server functions:
+To apply server-functionality in studio first connect to your project through the APIClient.
 
-from server_functions import ServerFunctions
-client.start_session(server_functions=ServerFunctions)
+See https://docs.scaleoutsystems.com/en/stable/apiclient.html for more information.
+
+When connected to the project API you can start sessions with your supplied server functions.
+
+Full commands to run through the API client:
+
+Get your token from the settings page in your studio project and add it in your system environment.
+
+.. code-block::
+    export FEDN_AUTH_TOKEN=<access token>
+
+Connect through the APIClient from a python instance, you can find your controller host on the studio Dashboard page.
+
+.. code-block::
+    from fedn import APIClient
+    client = APIClient(host="<controller-host>", secure=True, verify=True)
+
+Start a session with your ServerFunctions code (assuming you have uploaded a model seed, compute package and have connected clients).
+
+.. code-block::
+    from server_functions import ServerFunctions
+    client.start_session(server_functions=ServerFunctions)