Adding Laravel-Zero

README.md

 * [Radar](https://github.com/radarphp/Radar.Adr) - An Action-Domain-Responder implementation for PHP.
 * [Slim](https://www.slimframework.com/) - Another simple micro framework.
 * [Expressive](https://getexpressive.org/) - A micro-framework by Zend.
+* [Laravel-Zero](https://laravel-zero.com) - A micro-framework for console applications.
 
 ### Micro Framework Extras
 *Extras related to micro frameworks and routers.*