added link to docs,edit Basic Usage typo, simple server,

docs are excellent! added link in read me, as most people may not expect any docs.

Basic Usage typo in docs:
changed send to broadcast, this took me a while to understand...

simple server: something to get started on, may develop further as required

I work in json-xml-svg mostly, rather than html, 
but provide some feedback, and I'll add some more contributions.