Make a website similar to homebrew-hep

The website for [homebrew-hep](https://davidchall.github.io/homebrew-hep/), sourced [here](https://github.com/davidchall/homebrew-hep/tree/gh-pages), is pretty nice and includes useful information about the [formulae](https://davidchall.github.io/homebrew-hep/formula/cernlib). It may be an overkill for us, unless more formulae begin to be hosted here.