Update neuralNetAPI docs (#36)
Update neuralNetAPI docs (#36)

Move activations from Convolutional layers to ActivationMaker, and
change SoftMaxLossMaker to SoftMaxMaker

MiniLight/DeepCL,hughperkins/DeepCL,MiniLight/DeepCL,hughperkins/DeepCL,hughperkins/DeepCL,hughperkins/DeepCL,MiniLight/DeepCL,hughperkins/DeepCL,MiniLight/DeepCL,MiniLight/DeepCL