Show continuous memory profile for JavaScript application

in-browser memory stats for web app

Copied from https://github.com/paulirish/memory-stats.js

## memory-stats.js

Like [stats.js](https://github.com/mrdoob/stats.js/) but for JS memory

[@jeromeetienne](https://github.com/jeromeetienne/), inspired by mrdoob's stats.js code, wrote this as part of [tquery](https://github.com/jeromeetienne/tquery). I've now promoted it to a standalone repo and cleaned it all up.

![image](http://i.imgur.com/eUCFcAH.gif)

### Usage:

1. Start Chrome with `--enable-precise-memory-info`
    - Otherwise the results from performance.memory are bucketed and less useful.
1. Include memory.stats.js
1. Instatiate it (`stats = new MemoryStats()`, add the `stats.element` to the DOM, and run `stats.update()` regularly.

That might look something like index.html.

index.html

<script src="https://cdn.rawgit.com/paulirish/memory-stats.js/master/memory-stats.js"></script>
<script>
var stats = new MemoryStats();
stats.domElement.style.position = 'fixed';
stats.domElement.style.right        = '0px';
stats.domElement.style.bottom       = '0px';
document.body.appendChild( stats.domElement );
requestAnimationFrame(function rAFloop(){
    stats.update();
    requestAnimationFrame(rAFloop);
});
</script>