Add .sass-cache to the gitignore
Add test for serving a sass file with a mixin.
Make the source of the interface also the base load path for Sass engine (a.k.a. 'make mixins work').
Change some tests to the expect syntax to make them pass on Travis.
Compare the value of true with true (and not the object). Also, change to expect syntax
Switch to expect rspec syntax
Merge pull request #5 from VersaHQ/iss-4

Pass mockups location into the Sass load_paths array.