Optimal params for optical flow tracking. Some small box fixes.

AlexeyAB

2018-02-08 be90b8e8cb6bbf3951a5e185aa43ccfdd4a03f4d

 src/demo.c

@@ -125,7 +125,7 @@
    demo_classes = classes;
    demo_thresh = thresh;
    printf("Demo\n");
    net = parse_network_cfg(cfgfile);
    net = parse_network_cfg_custom(cfgfile, 1);
    if(weightfile){
        load_weights(&net, weightfile);
    }