Readme: fix local hash linking
Merge pull request #93 from UltCombo/patch-1

Readme: fix local hash linking
Make removePath[s] take an array of paths

To better clean our error messages.
Emit errors on spawn or sass error
Add tests for sass compile errors

Unfortunately since Sass writes errors to stdout, we can't silence the proecess
here. Some ugly sass output makes its way into the test output.
Document error handling in readme