matplotlib/matplotlib — pull request #1300 by jenshnielsen (2012-09-23 07:06:11+00:00)
Title: Pcolormesh and colorbar documentation. 

This lifts the documentation updates from #1178 which will not be merged. However I believe that
these documentation updates should go into the 1.2.x branch.

The changes are

Document that pcolormesh takes a face argument to the edgecolor.
And clarify that the colorbar in axesgrid1 is also drawn with pcolormesh (like the regular colorbar)