build: adding basic e2e testing infrastructure

modules/playground/src/animate/app/animate-app.ts

@@ -0,0 +1,13 @@
+import {Component} from '@angular/core';
+
+@Component({
+  selector: 'animate-app',
+  template: `
+    <h1>The box is {{visible ? 'visible' : 'hidden'}}</h1>
+    <div class="ng-animate box" *ngIf="visible"></div>
+    <button (click)="visible = !visible">Animate</button>
+  `
+})
+export class AnimateApp {
+  visible: boolean = false;
+}