Updated README.rst

README.rst

@@ -82,6 +82,7 @@ command invocations:
 
    options:
      -h, --help            show this help message and exit
+     --config CONFIG       Set config file location
      --json                Format output as json. Useful for scripting.
 
 Using as root
@@ -162,6 +163,14 @@ Troubleshooting
     :alt: pypi.org
     :target: https://pypi.org/project/usbsdmux
 
+MQTT Statistics
+---------------
+
+This tool can be configured to send certain statistics to a mosquitto broker.
+To enable this function create a config file at ``/dev/usbsdmux.config`` or use ``--config`` specify a file location.
+
+See example config file `usbsdmux.config <contrib/usbsdmux.config>`_.
+
 Contributing
 ------------