Yep, it's hosted on Zeit.co's Now service (https://now.sh https://now.sh), and they are experiencing a major service outage today. :( Most of the information on

Yep, it's hosted on Zeit.co's Now service (https://now.sh https://now.sh), and they are experiencing a major service outage today. :( Most of the information on the site can be found either on themer's readme (https://github.com/mjswensen/themer https://github.com/mjswensen/themer) or the GUI wrapper app's readme (https://github.com/mjswensen/themer-gui https://github.com/mjswensen/themer-gui).