Just link the service to your Github account and give the neccesary permissions to Comm(ent|it). Unless you ask for it, we will never commit to master. We create a feature branch and make pull requests. Github can also be used to authenticate your readers when they comment.
Edit your Jekyll template
Moderate with Git
By default, each comment generates a commit on a feature branch. A pull request is sent to merge the branch. To moderate comments before merging, just use $ git rebase -i master and remove the unwanted comm(ent|it)s.
User authentication with Github, Facebook or Twitter.