title: Escaping dollar sign in ipython notebook
body: <p>I have a markdown cell in iPython that contains four dollar signs. iPython interprets anything between dollar signs as a MathJax expression, which is not what I want. How do I escape the dollar signs? Escaping them with a backslash prevents MathJax from kicking in, but the backslash shows in the compiled Markdown.</p>
  
  <p>ANy ideas on how to get just the dollar sign?</p>
  
  <p>Thanks</p>