Are language and region working?

Good day, thanks you for the great plugin!

```
return array (
    'providers' => array (
        'Geocoder\Provider\GoogleMapsProvider' => ['fr-FR', 'Île-de-France', true]
    ),
    'adapter'   => 'Geocoder\HttpAdapter\CurlHttpAdapter'
);
```

return results in English only for me. So are  language and region working?
