Creating a pull request is easy. First off, create a new branch (something different than master, like demo) and make changes while in this new branch named demo. After you have commited and pushed to your demo branch, sign in to GitHub and make sure you are in the demo branch of your fork. Then simply click on the Pull Request button. It's located near the top of the page. Then make a name for this pull request and click 'Send Request' (or something like that). Oh, and whatever you commit and push to the demo branch is going to be automatically appended to the pull request. Fun stuff! 