Updating Compass dependency so it can work with 1.0.0.alpha releases

Bower would not install because there was no tag:
```
$ bower install sass-toolkit
bower not-cached    git://github.com/Team-Sass/color-schemer.git#>=0.2.3
bower resolve       git://github.com/Team-Sass/color-schemer.git#>=0.2.3
bower cached        git://github.com/Snugug/Sassy-Strings.git#1.0.0
bower validate      1.0.0 against git://github.com/Snugug/Sassy-Strings.git#*
bower cached        git://github.com/Team-Sass/breakpoint.git#2.3.0
bower validate      2.3.0 against git://github.com/Team-Sass/breakpoint.git#>=2.0.2
bower cached        git://github.com/Team-Sass/toolkit.git#1.3.8
bower validate      1.3.8 against git://github.com/Team-Sass/toolkit.git#*
bower ENORESTARGET  No tag found that was able to satisfy >=0.2.3
```

https://github.com/Team-Sass/toolkit/issues/46