pkgtreediff-0.1: README.md

# pkgtreediff

[![Hackage](https://img.shields.io/hackage/v/pkgtreediff.svg)](https://hackage.haskell.org/package/pkgtreediff)
[![GPL-3 license](https://img.shields.io/badge/license-GPL--3-blue.svg)](LICENSE)
[![Stackage Lts](http://stackage.org/package/pkgtreediff/badge/lts)](http://stackage.org/lts/package/pkgtreediff)
[![Stackage Nightly](http://stackage.org/package/pkgtreediff/badge/nightly)](http://stackage.org/nightly/package/pkgtreediff)
[![Build status](https://secure.travis-ci.org/juhp/pkgtreediff.svg)](https://travis-ci.org/juhp/pkgtreediff)

## Usage example

```
$ pkgtreediff treeurl1 treeurl2
+ newPackage v
- packageOld v'
 updatedPackage: v1 -> v2
```