Update README.md

example/flutter_app/README.md

@@ -1,6 +1,30 @@
 # centrifuge_app
 
-A new Flutter project.
+Flutter app example.
+
+Before running example make sure you created `chat` namespace in Centrifugo configuration and allowed publishing into channel - i.e. using config like this:
+
+```json
+{
+  ...
+  "namespaces": [
+    {
+      "name": "chat",
+      "anonymous": false,
+      "publish": true,
+      "join_leave": true,
+      "presence": true,
+      "presence_stats": true
+    }
+  ]
+}
+```
+
+Also run Centrifugo in insecure client mode so it does not expect JWT token from client:
+
+```bash
+./centrifugo --config config.json --client_insecure
+```
 
 ## Getting Started