Add a clarifying comment

lib/assets/javascripts/builder/components/modals/add-layer/content/imports/imports-wrapper-view.js

@@ -13,7 +13,14 @@ var REQUIRED_OPTS = [
 ];
 
 /**
- *  Selected Import header
+ * Imports Wrapper View
+ *
+ * This view contains the ImportsSelectorView (aka grid, connectors list)
+ * and the Selected Import. So this view can switch and show/hide
+ * between the two.
+ *
+ * The Selected Import is not created here. It's created in the
+ * ImportsSelectorView and passed in a triggered event.
  */
 
 module.exports = CoreView.extend({