obs example added.

README for obs example added

examples/obs/README.md

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+## Requirements
+
+-   [OBS Studio](https://obsproject.com/)
+-   [OBS Python SDK for Websocket v5](https://github.com/aatikturk/obsws-python)
+
+## About
+
+Perhaps you have a streaming setup but you want to control OBS and Voicemeeter from a remote location with python installed.
+With the vban-cmd and obsws-python packages you may sync a distant Voicemeeter with a distant OBS over LAN.
+
+The script assumes you have OBS connection info saved in a config file named `config.toml` placed next to `__main__.py`.
+It also assumes you have scenes named `START` `BRB` `END` and `LIVE`.
+
+A valid `config.toml` file might look like this:
+
+```toml
+[connection]
+host = "gamepc.local"
+port = 4455
+password = "mystrongpass"
+```
+
+## Use
+
+Simply fill in the OBS websocket details into `config.toml` and your VBAN text request settings in the script (`ip`, `streamname` and `port`).
+
+Make sure you have established a working connection to OBS and the remote Voicemeeter.
+
+Change OBS scenes and watch Voicemeeter parameters change.
+
+Pressing `<Enter>` will exit.
+
+## Notes
+
+This script can be run from a Linux host since the vban-cmd interface relies on UDP packets and obsws-python runs over websockets.
+
+You could for exmaple, set this up to run in the background on a home server such as a Raspberry Pi.
+
+It requires Python 3.10+.