Add generate to import .scss-lint.yml easily

While it has some quirks, which mainly have to be fixed on roger side of
things, this gives an nice idea of how easy (read: no excuse) it is to add a
config. Updated the documents to reflect usages and made adding a project
specific .scss-lint.yml file a recommendation.
Merge branch 'feature-generator' of https://github.com/edwinvdgraaf/roger_scsslinter into edwinvdgraaf-feature-generator
changed readme
Merge branch 'edwinvdgraaf-feature-generator'

Conflicts:
	README.md