No simple way to test custom trained model

[Aa20475]

It'll be good if we can provide model checkpoint file for prediction in predict.py

[iamshant]

After putting model checkpoint in configuration.py, remove the default argument for --v parser. before: parser.add_argument('--v', type=str, help='version', default='v3') after: parser.add_argument('--v', type=str, help='version')