Update README.rst

Author: kpogromskiy

README.rst

@@ -291,6 +291,17 @@ If you just want to start a single instance of the app and run it directly::
       --generate-config \
       --report-stats=[yes|no]
 
+    # Add Velas Account Auth Provider
+    Append homeserver.yaml with the following:
+<code>
+password_providers:
+  - module: "synapse.handlers.vaccount_auth.VaccountAuthProvider"
+    config:
+      REDIS_HOSTNAME: "redis"
+      REDIS_PASS: "development"
+      REDIS_REPLICATION_MODE: "master"
+      REDIS_PORT: 6379
+</code>
     # Start the app
     python -m synapse.app.homeserver --config-path homeserver.yaml