Adds tinycolor.spin()

Better readme for spin

Cleanup from my own review

more accurate readme, explicit tests

typo

Removes .idea from .ignore, moves spin comments inline

Better readme for spin

Cleanup from my own review

more accurate readme, explicit tests

typo

Removes .idea from .ignore, moves spin comments inline
Merge branch 'feature/spin' of https://github.com/levithomason/TinyColor