Bump NPM version to 0.9.15 in preparation for publishing.
Bump NPM version to 0.9.15 in preparation for publishing.

fkling/recast,benjamn/recast,benjamn/recast,marcioj/recast,ersengultepe/recast,kyldvs/recast,benjamn/recast,shumov/recast,ipeychev/recast,kassens/recast,cpojer/recast,rwaldron/recast