vacuate/README.md

this is a vacuate realization building on douglas peucker algorithm

# Douglas Peucker抽稀算法的JavaScript实现

## 用法

```
npm install vacuate --save
```
``` javscript
import vacuate from 'vacuate'
```
###  vacuate(points, tolerance)

+ points:  待抽稀的点集合，例如`[[1,2], [3,4], ...]`

+ tolerance: 抽稀阈值

+ return： 抽稀后的数组