README.md: add notes to How to compile on Windows

Jud White

2018-03-25 c6ecf1e0420737eafeb99b27b1d716b46a6cbb7a

 src/dropout_layer.h

@@ -1,8 +1,8 @@
#ifndef DROPOUT_LAYER_H
#define DROPOUT_LAYER_H

#include "params.h"
#include "layer.h"
#include "network.h"

typedef layer dropout_layer;