fixing some broken tests
added inspectPrefix that allows an early exit without fs operations when the path does not match a certain prefix
added a replacePrefix to help with mounted directories
bumping version
checking in generated js
Updated README.md

Added the `sourceMap` option.
moving changes into coffee file
added a replacePrefix to help with mounted directories
checking in generated js
removing inspectprefix and replacePrefix and added sourceMapRoot
Merge pull request #20 from pathsny/master

introduces the sourceMap changes from #19 and adds a  sourceMayRoot