Add stub to fix angular2 integration example
Add stub to fix angular2 integration example

Peppe/vaadin-components-examples,shahrzadmn/components-examples,manolo/components-examples,shahrzadmn/components-examples,Peppe/vaadin-components-examples,manolo/components-examples,Peppe/vaadin-components-examples,shahrzadmn/components-examples,manolo/components-examples