fix license badge

Author: make-github-pseudonymous-again

README.md

@@ -14,7 +14,7 @@ import {
 } from '@aureooms/js-error' ;
 ```
 
-[![NPM license](https://img.shields.io/npm/l/@aureooms/js-error.svg?style=flat)](https://raw.githubusercontent.com/aureooms/js-error/master/LICENSE)
+[![License](https://img.shields.io/github/license/aureooms/js-error.svg?style=flat)](https://raw.githubusercontent.com/aureooms/js-error/master/LICENSE)
 [![NPM version](https://img.shields.io/npm/v/@aureooms/js-error.svg?style=flat)](https://www.npmjs.org/package/@aureooms/js-error)
 [![Build Status](https://img.shields.io/travis/aureooms/js-error.svg?style=flat)](https://travis-ci.org/aureooms/js-error)
 [![Coverage Status](https://img.shields.io/coveralls/aureooms/js-error.svg?style=flat)](https://coveralls.io/r/aureooms/js-error)