Update README.md

README.md

 
 NB: This is the [TreeQL](https://treeql.org) reference implementation in PHP.
 
+You can easily integrate this project into the web framework of your choice, see:
+
+- [Automatic REST API for Laravel](https://tqdev.com/2019-automatic-rest-api-laravel)
+- [Automatic REST API for Symfony 4](https://tqdev.com/2019-automatic-rest-api-symfony)
+- [Automatic REST API for SlimPHP](https://tqdev.com/2019-automatic-api-slimphp-3)
+
 Related projects:
 
   - [PHP-API-AUTH](https://github.com/mevdschee/php-api-auth): Single file PHP script that is an authentication provider for PHP-CRUD-API