Creation of a vanilla css template that doesn't include bootstrap css.

[dougmcclurg]

• Removes all twitter bootstrap overides
  • Removes expensive [class^="icon-"] and [class*=" icon-"] css rules and replaces them with generated class names
  • Removes all comments in the css, comments are erroneous when passing through sass_converters
  • Adds a flag to options to generate the bare css file --bare_css

[kaizau]

Thanks for jumping in. Next version of the gem will be out next week with a different internal API. If you want the commit credit, just revise this to the big_refactor branch. Otherwise, I'm happy to do it myself on Tuesday.