Bump PlayN depend up to 1.8-SNAPSHOT.
Bump PlayN depend up to 1.8-SNAPSHOT.

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