parser: https://github.com/erusev/parsedown
css:    https://github.com/sindresorhus/github-markdown-css


nginx config:

        location ~ \.md$ {
                try_files $uri =404;
                fastcgi_pass    unix:/var/run/php5-fpm.sock;
                fastcgi_param   DOCUMENT_ROOT    $document_root;
                fastcgi_param   SCRIPT_NAME      $uri;
                fastcgi_param   SCRIPT_FILENAME  /var/www/vhost1/markdown-parser/md.php;
                include fastcgi_params;
        }

        location ~ ^(.*)\.md/raw$ {
                try_files $1.md =404;
                default_type text/plain;
        }