update to support literate coffeescript (>= 1.5.0) files
added md documentation on how to utilize literate coffeescript with this plugin. refactored out the CS Compiler API calls since they were only introduced in 1.6.0 and replaced them with their regexp logic, to prevent runtime errors when < 1.6.0 CS is used.
updated ./coffee-script.js to 1.6.2
Merge pull request #46 from stvnmntjy/master

support for literate coffeescript files