Update Readme.md - required cuDNN v5.1

Alexey

2017-03-31 9493fa14c4515cc9773286003542b36c910c44ca

 src/cost_layer.h

@@ -1,7 +1,7 @@
#ifndef COST_LAYER_H
#define COST_LAYER_H
#include "params.h"
#include "layer.h"
#include "network.h"

typedef layer cost_layer;