MIT license

This feels a bit presumptuous, but seeing as you accepted visionmedia/node-github-url-from-git#5, I'm hoping you're amenable to distributing `css-parse` under the MIT license as well.

In case you haven't seen it already, you could also

    curl -d'{ "copyright": "TJ Holowaychuk" }' http://visionmedia.mit-license.org

and then just add the following to your `package.json`

```js
  "licenses": [
    {
      "type": "MIT",
      "url": "http://visionmedia.mit-license.org/"
    }
  ],
```