Your app gobbled up all available RAM and caused my laptop to slow to a crawl. I had to switch virtual terminals to kill the tab responsible for your site.
Nice! The CSV format for code blocks grabbed my attention. That's possibly friendlier to write by hand than tables (https://github.com/adam-p/markdown-here/wiki/Markdown-Cheats...) and also nice because you could make your table in something like Excel/Libre, save to csv and then copy/paste.
[0]: http://ivanceras.github.io/spongedown-editor/