zsm_calc/README.md

可做简单运算

### 安装
```js
  npm install zsm_calc
```
### 导入
```js
  const calc = require('zsm_calc')
```
### 使用 demo
```js
  console.log(calc.add(1, 2));
  console.log(calc.reduce(1, 2));
  console.log(calc.product(1, 2));
  console.log(calc.except(1, 2));
```
### 开源协议
- ISC