Fix unary operators:

- Don't complain about slice(-1, 2), or var = +num; etc.
Add SCSS Linter
Update preferred sort order for CSS properties.
Change docs to favour 0.5 over .5 for decimal form.
Merge pull request #7 from mobify/fix-unary-operators

Fix unary operators
Merge pull request #16 from mobify/scss-lint

Add SCSS Linter
Update to not prefer hex over keywords
Merge pull request #17 from mobify/allow-color-keywords

Update to not prefer hex over keywords
Bump version number for release
Merge branch 'master' of https://github.com/mobify/mobify-code-style into update-css-styleguide

Conflicts:
	css/Readme.md