var loadResources = function(resources, callback) {
  var loader = PIXI.loader;

  loader.once('complete', callback);

  _.each(resources.images, function(url, name) {
    loader.add(name, url);
  });

  loader.load();
};

var resources = {
  name: '/link/to/resource.png'
};

loadResources(resources, function() {
  // Do something after resources are loaded.
});