Fixed some errors in the SBT build.
Fixed some errors in the SBT build.

tinkerstudent/playn,rachelharvey/playn,thecocce/playn-1,rachelharvey/playn,ruslansennov/playn2,playn/playn,tinkerstudent/playn,playn/playn,longtaoge/playn,ruslansennov/playn2,thecocce/playn-1,longtaoge/playn,playn/playn