remove comma in JSON

[azat-co]

There shouldn't be a comma in your Express.js example (port: 3000):

var Cluster = require('cluster2'),
    express = require('express');
var app = express.createServer();
app.get('/', function(req, res) {
    res.send('hello');
});

var c = new Cluster({
    port: 3000,
});
c.listen(function(cb) {
    cb(app);
});