Update Brainstorm.md

Added ProLoser's snippet

Brainstorm.md

@@ -10,5 +10,11 @@
  <div ui-grid-repeat ui-repeat-virtual="d in data">
  <!-- auto-generate columns if no content supplied? -->
  </div>
+
+ <!-- or perhaps this?? (from ProLoser) -->
+ <ng-repeat="item in $virtualized" ui-virtualize="items">
+ <!--
+ ui-virtualize virtualizes a list of items and hands it to the built-in repeater, if the repeater is performant enough
+ -->
 </div>
 ```