Add color rule for JavaScript and JSX syntax (#235)
Add color rule for JavaScript and JSX syntax (#235)

* Add color rule for JavaScript and JSX syntax

This adds support for colors embedded in strings in the JavaScript and JSX syntaxes. This greatly helps when developing UI using CSS-in-JS systems such as [Stitches](https://stitches.dev) or [Styled Components](https://styled-components.com). 

Solves #87.

* Remove dangling commas
facelessuser/ColorHelper,facelessuser/ColorHelper