Added support for using ruby haml gem
Improved error messages from haml transpiler
Workaround for silly assumption in grunt-contrib-internal README generation
Specifying version of execSync required
Updated description string to match original README
Trying a naive way to install haml on travis
Whoops, hadn't quite replaced all the travis urls
Merge pull request #9 from AmericanCouncils/master

Added support for Ruby haml