title: How to add syntax highlighting to sublime text 2
body: <p>Given the string <code>"text text #{interpolation}"</code> Sublime Text 2 highlights the whole string with one color.  I would like to highlight the interpolated text so it is easy to pick out.  When I press ctrl-shift-alt-p in the interpolated section Sublime tells me the namespace: <code>source.ruby string.quoted.double.ruby source.ruby.embedded.source</code></p>
  
  <p>I am wondering where I would define a rule to highlight this(I think in the tmLanguage file), what format that rule would take, and how to go about assigning a color to it.</p>