Add scss-lint to ensure well written Sass

[verpixelt]

Adding scss-lint together with a Git commit hook could help to keep the Sass files from getting messy.

[zoepage]

oh this is a good one. thanks :)

[verpixelt]

I have a implementation of it running in this repo: https://github.com/verpixelt/simple-sass

[verpixelt]

A Grunt task for Scss lint has been added to the https://github.com/hoodiehq/hoodie-css repo inside the gh-pages branch. For now this task just works manually by typing grunt scsslint (no pre-commit hook). With the ruleset in place right now this task will throw a ton of errors at you. The solution to this is either refactor the whole CSS or adjust the lint rules accordingly (The latter is just a lazy way around the actual problem). This task has to be finalized one way or another.