[V1.0] Add Basic Support for Rackspace Static Website

This pull request adds the ability to enable CDN container to serve static web pages and to set the index page of the static website.
[Rackspace Create Static Website](http://docs.rackspace.com/files/api/v1/cf-devguide/content/Create_Static_Website-dle4000.html)

```
  container.setStaticWebsiteIndexPage({ indexFile: 'index.html' }, function(err, container) {
    if (err) {
      // handle error
    }

    console.log(container.staticWebsiteIndexPage);
  });
});
```

Awesome. Thanks for setting the proxy methods.