Added Interval.ToString
Added Interval.ToString

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