variant name determined from datadir; fixes #25
variant name determined from datadir; fixes #25

Ecotrust/growth-yield-batch,jgcobb3/growth-yield-batch,jgcobb3/growth-yield-batch,Ecotrust/growth-yield-batch,jgcobb3/growth-yield-batch,Ecotrust/growth-yield-batch,jgcobb3/growth-yield-batch,Ecotrust/growth-yield-batch,jgcobb3/growth-yield-batch,Ecotrust/growth-yield-batch,jgcobb3/growth-yield-batch,Ecotrust/growth-yield-batch