That site is down because I'm migrating github pages to a custom domain, but the domain name has not yet propagated.
(According to the docs, you need to update the github page before propagation, even though that breaks it). It should be back soon.
Edit: The site is up now. http://0rora.com, with the demo at http://demo.0rora.com. Installation & configuration guide is pending, but HMU if you have any questions.