[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({ indexPage: 'index.html' }, function(err, container) {
    if (err) {
      // handle error
    }

    console.log(container.staticWebsiteIndexPage);
  });
});
```