V4

# New
- Rewritten from the ground up with Rework
- Updated modular architecture with NPM
- Design principles
- More powerful breakpoint-based grid system
- Better default color styles
- Removed nav and responsive type (to be replaced with NPM modules)

## To do
- [ ] Update README
- [ ] Using Rework docs
- [ ] Gulp recipe
- [ ] Update Guide
- [ ] Sassify task