Add a Statsd Chrome app

### What This Does:

* Allows statsd to run in a chrome packaged app (the same type you would download from the chrome app store)
* Uses pure chrome APIs, so node.js is never needed
* Runs in chrome, so it's still using the V8 JavaScript engine, so performance is still great
* Makes statsd very easily portable, since all it relies on is chrome
* The actual interface in the app is specified in app.js, it shows some basic stats and an embedded graphite window, by default
* But the great benefit of this method is that graphite will, in the future, no longer be required, since any browser JavaScript data visualization toolkit could be built as a backend right into the app

### How It Does It:

* While lots of code changes were necessary to make this work, this merge only includes them in source/ and bundle.js, so as not to pollute the main repo
* Uses [browserify](https://github.com/substack/node-browserify) to handle the conversion, with [chrome-net](https://github.com/feross/chrome-net) and [chrome-dgram](https://github.com/feross/chrome-dgram) handling the wrapping of chrome's networking APIs

### Why It Does It:

* This project was done to assist [Ripple Labs](https://www.ripple.com/) in easy tracking and monitoring of data, but the code created is fully general.

### Caveats:

* While the bundled chrome app can be run out of the box as is without any additional installations, browserify is required for compiling a new version, if that is ever needed
* Config editing has to be done inside bundle.js (or config.js if you are planning on re-bundling)--this is unfortunate, but no obvious workaround presented itself

*For more information, including all the code that went into this, see:
<https://github.com/evhub/statsd>*