code: function() {
  
              // creating template
              // <div class="gina-popins">
              //     <div class="gina-popins-overlay gina-popin-is-active"></div>
              // </div>
              var $container = document.createElement('div');
              $container.id = instance.id;
              $container.setAttribute('id', instance.id);
              $container.setAttribute('class', 'gina-popins');
  
              var $overlay = document.createElement('div');
              $overlay.setAttribute('id', 'gina-popins-overlay');
              $overlay.setAttribute('class', 'gina-popins-overlay');
  
  
              $container.appendChild( $overlay );
  
              // adding to DOM
              document.body.appendChild($container);
  
              instance.target     = $container;
              instance.on         = on;
  
              gina.popinContainer  = instance.id;
              gina.hasPopinHandler = true;
          }
docs: popinCreateContainer
  
  Creates HTML container and add it to the DOM