Symfony docs phpDocumentor Guides test

1. Installation:

   git clone --recurse-submodules https://github.com/wouterj/symfony-docs-guides
   cd symfony-docs-phpdoc
   composer install
   

2. Usage: php ./vendor/bin/guides --theme rtd --output html

3. View the rendered docs (if you have Caddy installed): caddy start and go to http://localhost:2000/