Added max_boxes for yolo v3

AlexeyAB

2018-03-30 35cc0aaa15b991b348cc8d9623eed5d4f8a1e435

 src/writing.c

@@ -9,7 +9,6 @@
void train_writing(char *cfgfile, char *weightfile)
{
    char *backup_directory = "/home/pjreddie/backup/";
    data_seed = time(0);
    srand(time(0));
    float avg_loss = -1;
    char *base = basecfg(cfgfile);