Some time ago (or maybe they never did from the start, didn't pay attention) Github stopped serving its Github Pages domains (*.github.io) over HTTPS, which means that you can now use Github Pages to host your Updater stuff for free.
Instructions are somewhat different from the Bitbucket ones Dr. McKay has up:
* Create a new repository
* Go to Settings and scroll down to the "Github Pages" section
* Click "Launch automatic page generator"
* It doesn't matter at all what content you choose to be displayed, or what theme you use. Just make sure that after you finish Github tells you that you now have a Github Page.
* Verify that you do your repo does in fact have a page by going to
http://yourusername.github.io/your-repository (for example:
http://50dkp.github.io/FF2-Official). You may need to wait a few minutes for it to show up.
* Upload all the Updater stuff to the gh-pages branch, and you should be good to go.