Yeah, this is happening because I specify the A Name record for the in-the-attic.com domain, if I hit gkwelding.github.com which is the github page itself then it's also blocked. Looks like some DNS FUBAR'ness is occurring somewhere.
We just added GitHub to our Firewall Unblocker for Hola, but we don't know if it's working. Can you check it out and report to me? Just install from Hola.org our Windows client > hover over the Hola tray icon and click Hola Unblocker. On this page choose GitHub from the Firewall Unblocker, and let me know at firstname.lastname@example.org Thanks! If it works, start telling your friends! BTW Hola is totally free! Thanks!