Simple example of streaming data to client?

[GeoffreyBooth]

The README has great examples of having the server run callbacks in response to database changes; is there an example you could include or link to that would show how to update the client from such a callback? I understand that that would necessarily include other libraries, such as to handle a websocket connection; so maybe it could be a separate repo, or subfolder in this one.

I think showing the reactivity working end-to-end in a simple hello-world-style app would be a powerful demo, and would help explain how this library can be used.