Fix demo packaging script.
Fix demo packaging script.

ruisebastiao/BulletSharp,ruisebastiao/BulletSharp,AndresTraks/BulletSharp,RainsSoft/BulletSharp,RainsSoft/BulletSharp,RainsSoft/BulletSharp,AndresTraks/BulletSharp,AndresTraks/BulletSharp,ruisebastiao/BulletSharp