Proposal: Add support for LaTeX equations using MathJax

[fiedl]

What do you think about adding support for LaTeX equations like this?

To render this, I've copied these lines (https://github.com/textmate/markdown.tmbundle/blob/master/Commands/Markdown%20preview.plist#L30L45)

if ENV["TM_MARKDOWN_MATHJAX"].to_i > 0
    puts "<script type=\"text/x-mathjax-config\">
      MathJax.Hub.Config({
        extensions: [\"tex2jax.js\"],
        jax: [\"input/TeX\", \"output/HTML-CSS\"],
        tex2jax: {
          inlineMath: [ [\"$\",\"$\"], [\"\\\\(\",\"\\\\)\"] ],
          displayMath: [ [\"$$\",\"$$\"], [\"\\\\[\",\"\\\\]\"] ],
          processEscapes: false
        },
        \"HTML-CSS\": { availableFonts: [\"TeX\"] }
      });
    </script>
    <script type=\"text/javascript\"    src=\"http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML\">
    </script>"
end

into

https://github.com/streeter/markdown-redcarpet.tmbundle/blob/master/Commands/Preview.tmCommand

and set TM_MARKDOWN_MATHJAX to 1 in the Textmate properties.