Setting up a Github Commit RSS feed

I am trying to have my github commits as an RSS feed but so far I have not managed to figure it out. I know that a private feed is available with the following syntax:

https://github.com/username.atom?token=token

But this the user's activity feed. I would like a commit feed of one of my projects.

Update: This was the final syntax:

https://github.com/username/repository_name/commits/branch_name.atom?login=login&token=token. 

Still can't view commits on all branches though.