First cut at tutorials

These were adapted from [Gibber](http://gibber.mat.ucsb.edu). They demonstrate using [`Node.js`](http://nodejs.org) for [livecoding](https://en.wikipedia.org/wiki/Live_coding), such as it is; the latency on Windows is literally ~3sec, making it *very* hard to do anything requiring tight timing.

An introductory tutorial (`#0` :wink: ) describing Node, defining livecoding, and giving some tips on how to set up and use a productive environment (I use [Sublime Text 3](http://www.sublimetext.com/3dev) latest dev build and the [Sublime REPL](https://github.com/wuub/SublimeREPL) plugin) would probably be a good idea.