* add mytrain.py for test
* test before layers
* test attr in layers
* test classifier
* delete mytrain.py
* add mobilenet_v3.yml
* fix ymal
* rename model_zoo.yml to model-index.yml
* replace imagenet with imagenet-1k
* add yml
* fix VGG
* minor fix
* add model zoo
* add bs and epoch
* revised according to comments
* revised according to comments
* revised according to comments