Added empty constructor
Added empty constructor

YilunZhou/Klampt,krishauser/Klampt,YilunZhou/Klampt,YilunZhou/Klampt,arocchi/Klampt,YilunZhou/Klampt,krishauser/Klampt,bbgw/Klampt,arocchi/Klampt,bbgw/Klampt,hpbader42/Klampt,bbgw/Klampt,stevekuznetsov/Klampt,stevekuznetsov/Klampt,arocchi/Klampt,stevekuznetsov/Klampt,hpbader42/Klampt,hpbader42/Klampt,krishauser/Klampt,arocchi/Klampt,hpbader42/Klampt,hpbader42/Klampt,krishauser/Klampt,krishauser/Klampt,krishauser/Klampt,bbgw/Klampt,stevekuznetsov/Klampt