Updated build script to include Event.js
Updated build script to include Event.js

Signed-off-by: Lanny McNie <2c0f44aec5a2bb5f2df6034ea7e908f734065b92@gskinner.com>

CreateJS/TweenJS,SpringRoll/TweenJS,SpringRoll/TweenJS,mrqi/TweenJS,Teino1978-Corp/Teino1978-Corp-TweenJS,output/TweenJS,createjs-components/tweenjs,legendvijay/TweenJS,ebabel-eu/TweenJS,Teino1978-Corp/Teino1978-Corp-TweenJS,CreateJS/TweenJS,evilemon/TweenJS,legendvijay/TweenJS,output/TweenJS,ta9mi/TweenJS