This is a test of the Github Pages functionality.
You can use Github Markdown in order to format this Read Me file. You can add italic text or bold text - in fact it would appear to be identical to R Markdown syntax.
Once you have pushed an HTML file into this repository, so long as Github Pages are enabled, you can find that file at the following address:
https://YOUR_USER_NAME.github.io/YOUR_REPO_NAME/NAME_OF_HTML_FILE.html
So, as both test and example, we should be able to find the Animation Demo, here.
The implication of all of this for YOU is that you can use this method to publish your final project online. You can create interactive graphics in an R notebook or markdown file, then knit it as an HTML document, and push it into a Github repository that has Github Pages enabled. You know have an online interactive project.