code: function el(element) {
    var classes = [];
    var tag = element;
    var el;
  
    if (isElement(element)) {
      return element;
    }
  
    classes = element.split('.');
    if (classes.length > 1) {
      tag = classes[0];
    }
    el = document.createElement(tag);
    addClass(el, classes.slice(1));
  
    return el;
  }
docs: createElement shortcut
  @param  {String} tag
  @return {Element} element