Update nautilus config paths

[lusac]

Would be great if I could update update nautilus config paths after nautilus inicialization.

Example:

// Initial
nautilus.config({
paths: {
'jquery': 'libs/jquery.js',
'waterfall': 'http://cdnjs.cloudflare.com/ajax/libs/waterfall.js/1.0.2/waterfall.min.js'
}
});

// Add new path
nautilus.config.paths.extend({ 'newSpacename': 'my/new/path.js' })

// Then
nautilus(['newSpacename'], function() {
console.log('Hello!');
});