Updates website to new tooling of github pages

[bric3]

GH Pages do not allow the current code highlighter and thus must be updated to rouge

The page build completed successfully, but returned the following warning:

You are attempting to use the 'rogue' highlighter, which is currently unsupported on GitHub Pages. Your site will use 'rouge' for highlighting instead. To suppress this warning, change the 'highlighter' value to 'rouge' in your '_config.yml' and ensure the 'pygments' key is unset. For more information, see https://help.github.com/articles/page-build-failed-config-file-error/#fixing-highlighting-errors.

For information on troubleshooting Jekyll see:

https://help.github.com/articles/troubleshooting-jekyll-builds

If you have any questions you can contact us by replying to this email.

[bric3]

Fixed by #19 and previous commits