Screenshots of what the console output looks like:
PROMPT> cargo run
Compiling arc_console v0.1.0 (/Users/neoneye/git/arc-console)
Finished dev [unoptimized + debuginfo] target(s) in 1.79s
Running `target/debug/arc_console`
Webserver - Listening on: 'localhost:9000' - Open this in the browser to see the console.
CTRL-C to stop the server.
Click on some of the buttons, and see the console being updated.
PROMPT> curl -d '{"message":"hello"}' -H "Content-Type: application/json" -X POST http://localhost:9000/event
It should now append the message hello
at the bottom.