Testing changes locally

You can follow this guide for the full instructions. Below is an abbreviated version.

1. Run gem install bundler. You may need to prefix this with sudo.
2. Install all the dependencies (including Jekyll) with bundle install.
3. Run the site locally with bundle exec jekyll serve.

You should see the site running at http://127.0.0.1:4000. It'll pick up changes as you make them; just refresh the browser to see any updates you make.