add nodeschool.io to resources

Author: aurieh

README.md

@@ -59,6 +59,7 @@ Note that this is not intended to be a comprehensive set of recommendations. Rat
 * [Nodejs.org](https://nodejs.org): Official Node.js website
 * [**Awesome node.js**](https://github.com/sindresorhus/awesome-nodejs): List of node packages and resources.
 * [**Javascript ES6 Features**](https://github.com/lukehoban/es6features): Comprehensive reference for new ECMAScript 6 features and changes.
+* [**nodeschool.io**](https://nodeschool.io/): Node.js community events, tutorials and meetups
 * [**Anything you want!**](CONTRIBUTING.md)