It would be really helpful if the README had a note about browser compatibility.
I actually needed something similar yesterday and have been able to achieve the same behaviour minus the animation using only CSS’ new column-count property and media queries.
This looks cool though to give full control, but I’d go again with something simpler when needed as JS powered grids feel too heavy and overkill.
The non-JS fallback on this is pretty crappy. There are half-way decent ways of accomplishing the same thing with CSS