Merge tag 'v0.2.1' into develop

Version 0.2.1
Merge tag 'v0.2.2' into develop

Version 0.2.2
Merge tag 'v0.2.3' into develop

Version 0.2.3
Merge tag 'v0.2.4' into develop

Version 0.2.4
Fix #8

Tested with LESS/SASS versions:
* lessc 1.7.5 (Less Compiler) [JavaScript]
* Sass 3.3.7 (Maptastic Maple)
Merge branch 'release/0.2.5'