testing: document examples The package documentation did not mention them. They were described only in godoc for gotest, and that's going away.
testing: document examples
The package documentation did not mention them.
They were described only in godoc for gotest, and that's going away.

R=golang-dev, rsc, adg
CC=golang-dev
http://codereview.appspot.com/5539079

tav/go,tav/go,tav/go,tav/go,tav/go,tav/go,tav/go