Add jupyter to jekyll support

[brooksandrew]

follow this blog post tested on Chinese Postman graph Optimization post and conversion went well. corresponding jekyll site on GH w implementation: https://github.com/gte620v/gte620v.github.io

Need to add mathjax support to render:

These look promising:
https://jekyllrb.com/docs/extras/
http://gastonsanchez.com/visually-enforced/opinion/2014/02/16/Mathjax-with-jekyll/