free from Jupiter nootbook

[KingsukMajumdar]

Sir/Sirs,
Thank for sharing such a good python program. Thank you very much.
But I have found that the code has a dependency on Jupiter nootbook . To free from it
I have added *.py files version of the following

1. usage_example
2. training_lstm
3. tree as follows
   ECG.zip
   ├── 3341105.3373945.pdf
   ├── data.py
   ├── detector.py
   ├── init.py
   ├── LICENSE
   ├── lstm.h5
   ├── pycache
   │   ├── data.cpython-35.pyc
   │   └── detector.cpython-35.pyc
   ├── training_lstm-checkpoint.ipynb
   ├── training_lstm.ipynb
   ├── training_lstm.py
   ├── usage_example.ipynb
   └── usage_example.py