WindowGo.hs: improve description
WindowGo.hs: improve description

I'm still not sure whether the description makes sense if you don't already understand the idea.

darcs-hash:20080316223946-f7719-1dbefc20dcd3d3b6696db6bc220a2cb986ab0b64

jthornber/XMonadContrib,jthornber/XMonadContrib