Update scss-lint to v0.22.0

This only updates scss-lint to v0.22.0 so the grunt package integrates latest features and bugfixes.
updated configs
added jscs for sanity and updated tests
updated readme
Fix jscs:src errors after introduced by rebase.
Merge pull request #23 from anselmh/patch-1

Update scss-lint to v0.22.0
bumped to v0.1.5