DOC UPDATE: Explanation of Linting & Prettier

[ProsperousHeart]

This information is based on the work of @jhoover

See:

• add CI option #54
• Add ci #49
• Add Prettier and Eslint linting and apply it. #57
• add automated linting & prettier formatting #59

[ProsperousHeart]

I will be updating documentation as I move through code review for #57 (and #49, which had original notes)

[ProsperousHeart]

#60 is the PR for this