Paddle/demo/introduction/README.md

This folder contains scripts used in PaddlePaddle introduction.
- use `bash train.sh` to train a simple linear regression model
- use `python evaluate_model.py` to read model parameters. You can see that `w` and `b` are very close to [2, 0.3].
Adding an introduction doc for Paddle to implement simplest linear regression. 8 years ago			`This folder contains scripts used in PaddlePaddle introduction.`
			- use `bash train.sh` to train a simple linear regression model
			- use `python evaluate_model.py` to read model parameters. You can see that `w` and `b` are very close to [2, 0.3].