Update README.md

Author: piranna

README.md

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+[![Greenkeeper badge](https://badges.greenkeeper.io/NodeOS/nodejs.svg)](https://greenkeeper.io/)
 [![Build Status](https://semaphoreci.com/api/v1/nodeos/nodejs/branches/master/badge.svg)](https://semaphoreci.com/nodeos/nodejs)
 
 # nodejs
 
-[![Greenkeeper badge](https://badges.greenkeeper.io/NodeOS/nodejs.svg)](https://greenkeeper.io/)
 Node.js as a npm package for NodeOS