Enhancement: re-design course to create profile README.md

[brianamarie]

We could revise this course, or create a fork of this course with a separate project to account for people that already have profile READMEs, so that the template repository is the project template repository will actually create a README.md that will appear on the user's profile.

cc @githubtraining/programs

[hectorsector]

There's enough other courses that do the current style, so I'd love to relaunch this course as the profile readme course.

If it makes sense to do it as a separate course and retire this one I'd be cool with that, too!