It appears that EXISTING API tokens are still supported, although I'm not entirely sure for how long—I do know for certain that you can no longer acquire an API token via the github GUI as I spent some time searching for it today for documentation purposes only to find the link above.
So, the github integration should probably be considered broken. It looks like the new solution will have to request an authentication token using OAuth instead.
https://github.com/blog/1090-github-api-moving-on
It appears that EXISTING API tokens are still supported, although I'm not entirely sure for how long—I do know for certain that you can no longer acquire an API token via the github GUI as I spent some time searching for it today for documentation purposes only to find the link above.
So, the github integration should probably be considered broken. It looks like the new solution will have to request an authentication token using OAuth instead.