Setup Gulp task for running Sass tests, and add specs for isitlight, smartscale, and hasvalue
Add tests for map-next, get-side, and strip-unit
Condense hasvalue into two tests
Reword Sass test descriptions, fix incorrect test value on hasvalue test
Add Sass unit tests for get-border-value, get-shadow-value, map-serialize, turn-to-deg, convert-to-rem, and rem-calc
Merge pull request #108 from zurb/sass-tests

Unit tests for Sass functions