Fixed issue with zip to comply with Python 3
Fixed issue with zip to comply with Python 3

sallai/mbuild,iModels/mbuild,tcmoore3/mbuild,iModels/mbuild,ctk3b/mbuild,Jonestj1/mbuild,tcmoore3/mbuild,summeraz/mbuild,summeraz/mbuild,sallai/mbuild,Jonestj1/mbuild,ctk3b/mbuild