test(item): add activated class to one of the items

references #5350

ionic/components/item/item.scss

@@ -30,8 +30,8 @@
   padding: 0;
   border: 0;
   overflow: hidden;
-  min-height:inherit;
-  
+  min-height: inherit;
+
   flex: 1;
   flex-direction: inherit;
   align-items: inherit;

ionic/components/item/test/buttons/main.html

@@ -88,8 +88,8 @@
     <button outline item-right (click)="testClick($event)">View</button>
   </ion-item>
 
-  <button ion-item *ngFor="#data of [0,1,2,3,4]">
-    <h3>ng-for {{data}}</h3>
+  <button ion-item *ngFor="#data of [0,1,2,3,4]; #i = index" [class.activated]="i == 1">
+    <h3>ng-for {{i}}</h3>
   </button>
 
 </ion-content>