Selectize plugin to help show a "no results" message when your options are loaded dynamically

gistfile1.txt

// Selectize doesn't support returning a "no results" message. This plugin
// tries to add the capability to display a no results message.
// Note that it won't actually display the message here automatically.
// Instead we show the empty results container manually in our AJAX callback
// when we load options dynamically and there are no results.
// See https://github.com/brianreavis/selectize.js/issues/470

Selectize.define('no_results', function( options ) {
    var self = this;

    options = $.extend({
        message: 'No results found.',
        html: function(data) {
            return (
                '<div class="selectize-dropdown ' + data.classNames + ' dropdown-empty-message">' +
                    '<div class="selectize-dropdown-content" style="padding: 3px 12px">' + data.message + '</div>' +
                    '</div>'
                );
        }
    }, options );

    self.displayEmptyResultsMessage = function () {
        this.$empty_results_container.css( 'top', this.$control.outerHeight() );
        this.$empty_results_container.show();
    };

    self.onKeyDown = (function () {
        var original = self.onKeyDown;

        return function ( e ) {
            original.apply( self, arguments );
            this.$empty_results_container.hide();
        }
    })();

    self.onBlur = (function () {
        var original = self.onBlur;

        return function () {
            original.apply( self, arguments );
            this.$empty_results_container.hide();
        };
    })();

    self.setup = (function() {
        var original = self.setup;
        return function() {
            original.apply(self, arguments);
            self.$empty_results_container = $( options.html( $.extend( {
                classNames: self.$input.attr( 'class' ) }, options ) ) );
            self.$empty_results_container.insertBefore( self.$dropdown );
            self.$empty_results_container.hide();
        };
    })();
});

Hi,
I can't make it work.
Am I supposed to do something else besides loading this .js and adding plugins: ['no_results'] to my Selectize?