Open Knowledge template for Github Pages (Jekyll) websites.
Copy relavant template from _layouts/default-v{X}.html into
_layouts/default.html for your site.
Check out demo-v{X}.html for an example page.
Note: you do not need the CSS as we link out to online css. You only need CSS if you want to develop locally and/or want to tweak the css.
Use _layouts/default-v1.html
Use _layouts/default-v2.html