Move to stylelint

[aubreypwd]

Greg says it better. Using it on https://github.com/gregrickaby/wp-starter-theme/blob/master/package.json — check it out!

[aubreypwd]

See WebDevStudios/wd_s#548

This has been moved to a higher priority, the standards already exist in wd_s and we could port them over.

—

Please see this PR for more info.

Some bookmarks:

• 1.0.1 of our sasslint configs
• sasslint rules
• Conversions to stylelint
• Stylelint Rules
• Current Rules ported over