Style: use arrow functions instead of function keyword

[emersion]

server.listen(config.port, function(){console.log('App running on port ' + config.port)})

->

server.listen(config.port, () => console.log('App running on port ' + config.port))

[Granipouss]

Not a real issue, I like arrow functions indeed but for new comers to javascript it can be hard to understand.