zurb/foundation — pull request #1731 by juliankrispel (2013-03-05 23:14:54+00:00)
Title: Apply $block-grid-default-spacing to all block-grid classes

I don't see any reason why $block-grid-default-spacing should only be allowed for a block-grid of column size four or up, hence I removed that restriction. It seems to work just dandy.