Bump to PlayN 1.5-SNAPSHOT since we track its version.
Bump to PlayN 1.5-SNAPSHOT since we track its version.

tomfisher/tripleplay,joansmith/tripleplay,tomfisher/tripleplay,joansmith/tripleplay,joansmith/tripleplay,tomfisher/tripleplay,joansmith/tripleplay,joansmith/tripleplay,tomfisher/tripleplay,tomfisher/tripleplay