Update software

[terasakisatoshi]

This PR contains some modification and feature mentioned in update plan #7

• revise augmentation logic
• execute your pretrained model without modification of config.ini which is located root directory of this repository.
  • you can use e.g.

python predict.py ./trained # or run bash script

• bump up Chainer version to 5.1.0
• add script to export onnx format discussed in Whether is it to export trained model to ONNX? #6

[terasakisatoshi]

Happy Holidays!