The nuts and bolts of the site are hosted via github-pages. Here, you can join in on the discussion for how to improve the website, talk about features and bugfixes, or even submit a change via pull request.
An example pull request for this site can be found here.
After installing jekyll jekyll/installation:
$ bundle
$ bundle exec jekyll build --safe
$ bundle exec jekyll serve
Then point your browser to http://localhost:4000.