Add the Sponsors section

Author: dmitry-ivanov

README.md

@@ -521,6 +521,10 @@ $xml = array_to_xml($array, 'Guys');
 // </Guys>
 ```
 
+## Sponsors
+
+[![Laravel Idea](art/sponsor-laravel-idea.png)](https://laravel-idea.com)
+
 ## License
 
 Laravel Helper Functions is open-sourced software licensed under the [MIT license](LICENSE.md).