code: function formatAttributes (attrObj) {
      var attributes = [];
  
      for (var attribute in attrObj) {
        attributes.push(attribute + '="' + attrObj[attribute] + '"');
      }
  
      return attributes.join(' ');
    }
docs: Format an object of attributes into a HTML string
  
  @param  {Object} attrObj
  @return {String}