Add ngModel to switch demo

ionic/components/switch/test/basic/index.ts

@@ -25,6 +25,8 @@ class IonicApp {
 
     this.grapeDisabled = true;
     this.grapeChecked = true;
+
+    this.myModel = true;
   }
 
   toggleGrapeChecked() {

ionic/components/switch/test/basic/main.html

@@ -28,6 +28,10 @@
         Secondary color
       </ion-switch>
 
+      <ion-switch value="apple" checked="true" [(ng-model)]="myModel">
+        I'm an NgModel
+      </ion-switch>
+
     </ion-list>
 
   </form>
@@ -47,6 +51,7 @@
     <code>cherry.value: {{fruitsForm.controls.cherryCtrl.value}}</code><br>
     <code>grape.dirty: {{fruitsForm.controls.grapeCtrl.dirty}}</code><br>
     <code>grape.value: {{fruitsForm.controls.grapeCtrl.value}}</code><br>
+    <code>ngModel.value: {{myModel}}</code><br>
   </p>
 
   <pre aria-hidden="true" padding>{{formResults}}</pre>