Use https URL when including MathJax javascript.

[sflanker]

When I view your github.io page none of the formulas render correctly, I just see the markup. This is happening because my web browser is blocking the insecure JS reference (http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML) from a secure page. You can see the fixed site: here.