Howdy,
I've added the centos-ci bot to a team on Github and am awaiting approval from whoever maintains to accept the invite. This also might be worth putting on the wiki page under 'Mode 2' [1] in case there is just simply a time period to wait or whether users need to request an invite be accepted through the mailing list or bug tracker.
Thanks
[1] https://wiki.centos.org/QaWiki/CI/GithubIntegration