digital-root/readme.md

Calculate the digital root of a number.

# digital-root [![Build Status](https://travis-ci.org/gillstrom/digital-root.svg?branch=master)](https://travis-ci.org/gillstrom/digital-root)

> Calculate the [digital root](https://en.wikipedia.org/wiki/Digital_root) of a number.


## Install

```
$ npm install --save digital-root
```


## Usage

```js
var digitalRoot = require('digital-root');

digitalRoot(65536);
//=> 7
```


## License

MIT © [Andreas Gillström](http://github.com/gillstrom)