Grid / Layout

@pdewouters was implementing the pattern library on his project, and the question of grids came up. At the retreat, we decided to leave grids and remain opinionated about the page layout.

Personally, i'm not a fan of complex grid systems. I'm not sure its that hard a problem. But then the aim of the project is to aid with the speed of getting started, and improving brand consistency so I think this definitely fits within the remit.

I have had a bash as a super simple grid system. Its more a few classes and a mixin to get the width of a column within a given number of columns. https://github.com/humanmade/hm-pattern-library/blob/grid/src/styles/utilities/_grid.scss

Any thoughts on this? Should we add it to Juniper?