MathJax formulas

Great lib, but in practice I don't know know how to mix it with math formulas MathJax, is there is anyway to do this? Thanks)

I tried to put MathML stuff as text, but nothing shows up, I tried $$..$$ does not helps

It would be very awesome, because I did a lot of flow charts by hand and it is kinda stupid, your solution seems to be interesting.

I found it on http://stackedit.io/