Update Readme.md - pragma-libs in How to compile

Alexey

2017-01-02 0be9b45835eda071f5a1754581630e2f9e4891d3

 src/voxel.c

@@ -5,6 +5,7 @@

#ifdef OPENCV
#include "opencv2/highgui/highgui_c.h"
image get_image_from_stream(CvCapture *cap);
#endif

void extract_voxel(char *lfile, char *rfile, char *prefix)