Update guide.md node.js instructions
Update guide.md node.js instructions

Update the instructions for requiring the EventEmitter in node.js

Olical/EventEmitter,Wolfy87/EventEmitter,Wolfy87/EventEmitter,oculus42/EventEmitter,oculus42/EventEmitter,modulexcite/EventEmitter,Olical/EventEmitter,modulexcite/EventEmitter,Olical/EventEmitter