More doc changes responding to comments on previous ones.
More doc changes responding to comments on previous ones.

nodatime/nodatime,zaccharles/nodatime,malcolmr/nodatime,malcolmr/nodatime,malcolmr/nodatime,jskeet/nodatime,BenJenkinson/nodatime,nodatime/nodatime,BenJenkinson/nodatime,malcolmr/nodatime,zaccharles/nodatime,zaccharles/nodatime,zaccharles/nodatime,zaccharles/nodatime,jskeet/nodatime,zaccharles/nodatime