With client

Hello! I added a small http client and a wrapper to make the library a tiny bit easier to use. New syntax becomes:

$response = (new SeoMozService)->request($url);

If you like the idea, maybe I can improve it a little. Let me know what you think.
Exactly. Or even shorter
```php
return $this->getSeoMozData($client->get($this->getSeoMozUrl($url)));
```