jekyll_ext allows you to extend the Jekyll static blog generator without forking and modifying it's codebase. With this code, not only do your extensions live in your blog directory, but they can also be shared and reutilized.
An extension on b2a3e8's jekyll-theme-console-ext. Added centered images, code highlighting and tags. Feel free to check out my personal website for a quick demo (pedr0silva.github.io)