Update README.md: added example how to use web-cam

Alexey

2016-12-10 cf29681a5040bf4114672181cd18609065d3a3ef

 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;