a minimal requestAnimationFrame render loop
npm install raf-loop
A minimal requestAnimationFrame render loop for node and the browser, using high-performance timing where possible.
``js
var loop = require('raf-loop')
var engine = loop(function(dt) {
// delta time in milliseconds
}).start()
`

#### engine = loop([fn])
Creates a new loop with an optional function to receive tick events. The function will be called with delta time as the first parameter, in milliseconds.
#### engine.start()
Starts the render loop and returns this engine, for chaining.
#### engine.stop()
Stops the render loop and cancels the currently requested animation frame.
#### engine.on('tick', fn)`
Attaches another function to the render loop.
MIT, see LICENSE.md for details.