Less Grid: Grid overlay for Less Framework

I've been using Less Framework 4 to redisign my site, so I could use media queries.

I found helpfull the script they use in 960 Grid System: 960 Gridder in some sites I've worked in, so I decided to create something similar, and share it in case someone else has that same need.

I've defined the same width and separation than Joni Korpi uses in his framework, but feel free to do any modifications you need to this plugin.