minor argument name change to increase Theano compatibility
minor argument name change to increase Theano compatibility

bstadie/cgt,RichardWarfield/cgt,RichardWarfield/cgt,rohanraja/cgt_distributed,animesh-garg/cgt,dementrock/cgt,dementrock/cgt,bstadie/cgt,animesh-garg/cgt,rohanraja/cgt_distributed,rohanraja/cgt_distributed,dementrock/cgt,animesh-garg/cgt,RichardWarfield/cgt,rohanraja/cgt_distributed,bstadie/cgt