better css formatter
fix skip option and set default
add examples
clean up options some more
Moved extend test 190 out of todo, added test of @extend output.
Removed basic-extend-tests, as they are duplicated in extend-tests.
exit with failure code when minitest fails

This is causing Travis to report false positives. Ahh!

See: sass/libsass#468.
Merge pull request #36 from benesch/report-failures

exit with failure code when minitest fails
Merge pull request #30 from blopker/master

Fix --skip option and add a more consistent CSS formatter.
Merge remote-tracking branch 'michaek/feature/remove-basic-extend-tests'
Merge remote-tracking branch 'michaek/feature/placeholder-grouped-selector'

Conflicts:
	spec/extend-tests/190_test_semi_placeholder_selector/input.scss
Moved passing extend tests out of todo folder.
Removed zombie test.
Added placeholder-with-media test case.
Merge branch 'feature/placeholder-with-media'