code: function(el, value)
  	{
  		!conbo.isEmpty(value)
  			? el.classList.add('cb-hide')
  			: el.classList.remove('cb-hide');
  	}
docs: Hides an element by making it invisible, but does not remove
  if from the layout of the page, meaning a blank space will remain
  
  @param 		{HTMLElement}	el - DOM element to which the attribute applies
  @param 		{*} 			value - The value referenced by the attribute
  @returns		{void}
  
  @example
  <div cb-hide="propertyName"></div>