Update package.json for Jeet 4 npm distribution
Update package.json and add jeet.js to turn into Stylus library
Update package.json deps
Update README instructions
Converting colon-less syntax to colon as Stylus style convention
Convert padding variable to pad as Stylus style convention
Remove image from edit() mixin as Stylus lib ver of Jeet won't support
Convert all @extends to @extend
Make center() padding = 0 by default