Added support for empty shims, with CoffeeScript
Merge pull request #271 from ChrisAntaki/master

Added support for empty shims, with CoffeeScript
Fixes #267 and fixed formatting issue

* generating main.css and main.scss leads to overwrite
  on sass compilation, os main.css will generate only when
  sass is not selected
Merge pull request #278 from revathskumar/fix

Fixes #267 and fixed formatting issue
Using composeWith instead of hookFor
Merge pull request #280 from revathskumar/use-compose-with

Using composeWith instead of hookFor