assume vban.toml for observer example

add README to observer example

examples/observer/README.md

@@ -0,0 +1,29 @@
+## About
+
+Registers a class as an observer and defines a callback.
+
+## Configure
+
+The script assumes you have connection info saved in a config file named `vban.toml` placed next to `__main__.py`.
+
+A valid `vban.toml` might look like this:
+
+```toml
+[connection]
+ip = "gamepc.local"
+port = 6980
+streamname = "Command1"
+```
+
+It should be placed next to `__main__.py`.
+
+## Use
+
+Make sure you have established a working VBAN connection.
+
+Run the script, then:
+
+-   change GUI parameters to trigger pdirty
+-   play audio through any bus to trigger ldirty
+
+Pressing `<Enter>` will exit.

examples/observer/__main__.py

@@ -22,7 +22,9 @@ class Observer:
 
 
 def main():
-    with vban_cmd.api(kind_id, **opts) as vban:
+    kind_id = "potato"
+
+    with vban_cmd.api(kind_id) as vban:
         Observer(vban)
 
         while cmd := input("Press <Enter> to exit\n"):
@@ -33,11 +35,4 @@ def main():
 if __name__ == "__main__":
     logging.basicConfig(level=logging.INFO)
 
-    kind_id = "potato"
-    opts = {
-        "ip": "<ip address>",
-        "streamname": "Command1",
-        "port": 6980,
-    }
-
     main()