Update Compass version in tests Gemfile.
Remove "patched" version of support-legacy-browser(). Fixes #60
Use "spec" instead of "s" as variable in gemspec.
Move partials into stylesheets folder to prevent Compass from rendering tests and templates.
Update gemspec to remove unneeded files.
Update Sass version dependency in gemspec.
Fix color output of tests.
Add $critical-usage-threshold to Compass test.
Update zen-grid-background test to include IE9 svg and -webkit-gradient output.
Add "undo" module to turn off grid-item/grid-container styling. Fixes #48
Rename variables in unit_tests.rb so I can understand them.