And that's exactly what the gh-pages branch in a repo that generates a Github Pages/Jekyll site addresses - https://pages.github.com/
This is an admirable effort but I feel it's going about the problem the wrong way. The presentation is very rarely the problem with developer websites. It's the content that's the problem. No amount of fancy bootstrap veneer is going to fix someone failing to write documentation for their project or themselves, especially when Github makes it very easy.