Added script to support site type "wordpress" (#1175)
Added script to support site type "wordpress" (#1175)

* Added script to support site type "wordpress" which sets up Nginx rules for WordPress, downloads latest stable version of WordPress, installs WP_Cli and generates wp-config.php for the WordPress site as well.

* WP_Cli is installed as part of base install, so removed its installation step. Added self-update for WP_Cli so that it would get updated if new stable release is available.

laravel/homestead,svpernova09/homestead,svpernova09/homestead,laravel/homestead,svpernova09/homestead,laravel/homestead