Update README.md

Author: Aurélien Ooms

README.md

@@ -3,8 +3,13 @@
 
 graphs and networks code bricks for JavaScript
 
-[![Build Status](https://travis-ci.org/aureooms/js-gn.svg)](https://travis-ci.org/aureooms/js-gn)
-[![Coverage Status](https://coveralls.io/repos/aureooms/js-gn/badge.png)](https://coveralls.io/r/aureooms/js-gn)
-[![Dependencies Status](https://david-dm.org/aureooms/js-gn.png)](https://david-dm.org/aureooms/js-gn#info=dependencies)
-[![devDependencies Status](https://david-dm.org/aureooms/js-gn/dev-status.png)](https://david-dm.org/aureooms/js-gn#info=devDependencies)
-[![Code Climate](https://codeclimate.com/github/aureooms/js-gn.png)](https://codeclimate.com/github/aureooms/js-gn)
+[![NPM license](http://img.shields.io/npm/l/aureooms-js-gn.svg?style=flat)](https://raw.githubusercontent.com/aureooms/js-gn/master/LICENSE)
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+[![Build Status](http://img.shields.io/travis/aureooms/js-gn.svg?style=flat)](https://travis-ci.org/aureooms/js-gn)
+[![Coverage Status](http://img.shields.io/coveralls/aureooms/js-gn.svg?style=flat)](https://coveralls.io/r/aureooms/js-gn)
+[![Dependencies Status](http://img.shields.io/david/aureooms/js-gn.svg?style=flat)](https://david-dm.org/aureooms/js-gn#info=dependencies)
+[![devDependencies Status](http://img.shields.io/david/dev/aureooms/js-gn.svg?style=flat)](https://david-dm.org/aureooms/js-gn#info=devDependencies)
+[![Code Climate](http://img.shields.io/codeclimate/github/aureooms/js-gn.svg?style=flat)](https://codeclimate.com/github/aureooms/js-gn)
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