allow adding custom message handlers easily.

without disrupting normal operation. now, setting the name would make
this funnier, as would having a separate bot. and possibly a tiny editor
that allows eval in the usual page, stores the scripts, ...

um, yeah.

js/babl/public/index.html

@@ -42,10 +42,10 @@
				}
			}
			ws.onmessage = function(ev) {
			ws.addEventListener('message', function(ev) {
				var msg = JSON.parse(ev.data);
				handleMessage(msg);
			}
			});
			function sendMessage(msg) {
				var msg = {