This is just a pet peeve of mine. I don't understand why you ask "Are you sure you want to leave this page" when I click back, or try to close the tab. I am sure - that's why I tried to leave.
edit: fixed typo
116 karma · joined April 15, 2013
edit: fixed typo
As far as I remember in order to get the GitHub authentication piece working you need to use an external app simply for the authentication with GitHub. DevelopmentSeed also wrote an app for this called gatekeeper (I think) which I believe is a node.js application.
impressive stuff.