README.md

## Standard
Install
```
pip install numpy matplotlib plotly
```

Run
```
python main.py
```

Result:
- A html with the 3d plot is saved which can be viewed in a browser
- The xyz trajectory plot opens

## If you want to use the default 3d plot instead of the html
1. No need to install plotly
2. (Un)comment line 26-29 in main.py

Result: The 3d matplotlib plot and xyz plot opens

Questions: 12432115@zju.edu.cn or open an issue.