Data Prepare
https://medium.com/@wayne18308/yolo%E5%AF%A6%E4%BD%9C%E6%95%99%E5%AD%B8-train%E5%87%BA%E5%B1%AC%E6%96%BC%E8%87%AA%E5%B7%B1%E7%9A%84model%E4%BD%BF%E7%94%A8darkflow-windows-9b633b7350d8
tiny yolo training
