code: function(options, select) {
                  if (options.length === 0) {
                      return this.nonSelectedText;
                  }
                  else {
                      var selected = '';
                      var delimiter = this.delimiterText;
  
                      options.each(function () {
                          var label = ($(this).attr('label') !== undefined) ? $(this).attr('label') : $(this).text();
                          selected += label + delimiter;
                      });
                      return selected.substr(0, selected.length - 2);
                  }
              }
docs: Updates the title of the button similar to the buttonText function.
  
  @param {jQuery} options
  @param {jQuery} select
  @returns {@exp;selected@call;substr}