Add some comments that will help developers use autoaugment.py to implement the 5-2 policy system in their own agents.

move all datasets to /datasets/mnist folder. MAKE SURE TO USE PARAMETER DOWNLOAD=TRUE TO DOWNLOAD MNIST DATA AGAIN

Now you can 'import MetaAugment.child_networks' and 'network = child_networks.lenet()' instead of 'network = LeNet()'