Welcome to GitHub Pages.
If you use the "Fork me" link you can see the GitHub-iness of this repo. This is about hooking up to Cloud9, which has it's little challenges.
The development version of my online CV is here on GitHub
I intially followed that the instructions for setting up a Project with a github repo at https://docs.c9.io/setting_up_github_workspace.html
I found this didn't work so well with my repo because of the naming convention (githup pages sets up a repo as username.github.io), so I used the command line in Cloud9 to set up instead :
git remote add origin https://github.com/mattrobinsoncv/mattrobinsoncv.github.io.git
I also found that I could Clone easily enough, but I wasn't able to commit the changes due to authentication failures. Turns out you need to use the SSH URL (Thanks to @DouglasCAyers for the set-url tip) instead, like this :
git remote set-url origin git@github.com:mattrobinsoncv/mattrobinsoncv.github.io.git