perusio

I'm trying to make use of Perusio's Piwik config alongside his Drupal config. I've copied the Piwik config files to /etc/nginx/apps/piwik/ and created a .conf file using the subdomain suggested (stats.example.com). This has the include to /apps/piwik.conf in it, as per the example conf file provided.

Do I need to add a DNS record/'officially' create a subdomain to run Piwik from that URL? If possible, I'd rather use an example.com/piwik structure, but that's proving tricky.