some logs improvements

main.cpp

@@ -169,7 +169,6 @@ namespace FaceDetection
             faceDetector->Start([](cv::Mat mat)
                                 {
                                     ((faceRequest *) frameAsyncToken.data)->frame = mat;
-                                    printf("lol, callback\n");
                                     uv_async_send(&frameAsyncToken);
                                 },
                                 [](std::string filename) //save callback
@@ -180,6 +179,7 @@ namespace FaceDetection
                                 },
                                 [](std::string filename, int votes) //check callback
                                 {
+                                    printf("check callback \n");
                                     ((faceRequest *) (checkAsyncToken.data))->filename = filename;
                                     ((faceRequest *) (checkAsyncToken.data))->result = votes;
                                     uv_async_send(&checkAsyncToken);