Webdriver setting up testing environment

I've setting up testing environment under selenium and Webdriverio in JavaScript. I've followed steps described on official Webdriver webpage, created test file and run it. What happened was that it opened my browser (Firefox), but only blank page appeared.

Animation how it's working

Code what I'm running

var webdriverio = require('webdriverio');
var options = {
desiredCapabilities: {
    browserName: 'firefox'
}
};

webdriverio
.remote(options)
.init()
.url('http://www.google.com')
.getTitle().then(function(title) {
    console.log('Title was: ' + title);
})
.end();

Thank you for any assistance how to get out of this problem :)