code: function TimelineMe(element, options) {
          // Store a reference to the source element
          this.el = element;
  
          // Store a jQuery reference  to the source element
          this.$el = $(element);
  
          // Set a random (and normally unique) id for the object
          this.instanceId = Math.round(new Date().getTime() + (Math.random() * 100));
  
          // Set the instance options extending the plugin defaults and
          // the options passed by the user
          this.settings = $.extend({}, $.fn[pluginName].defaults, options);
  
          // Initialize the plugin instance
          this.init();
      }
docs: The plugin constructor
  @param {DOM Element} element The DOM element where plugin is applied
  @param {Object} options Options passed to the constructor