Apply simple pruning on Caffemodel

1. Get caffemodel from model zoo

2. open proto.py(or pycaffe.py) and specify the name of target layer and its pruning ratio

# AlexNet example
ratio = {"fc6":0.91, "fc7":0.91, "fc8":0.75}

3. Example commandline usage.

# Using protobuf api
proto.py bvlc_alexnet.caffemodel output_pruned.caffemodel

# Using pycaffe api
pycaffe.py deploy.prototxt bvlc_alexnet.caffemodel output_pruned.caffemodel

To run pycaffe.py, pycaffe should be built in advance.