updating openCV header include to newer versions

src/examples/firewire_camera_cont_CV.cpp

@@ -6,8 +6,7 @@
 #include <iostream>
 #include <string>
 #include <sstream>
-#include "cv.h"
-#include "highgui.h"
+#include <opencv2/opencv.hpp>
 
 using namespace cv;
 const int num_frames=10;