anchor.diff:          <data>1, 1, 2, 3, 5, 8, 13, 21, 34</data>
         </data-series>
       </vaadin-area-chart>`,
  -  directives: [VaadinCharts, DataSeries]
  +  directives: [PolymerElement('vaadin-charts'), PolymerElement('data-series')]
   })
   ----
   
  
positive.code: [[vaadin-core-elements.angular2]]
  = Angular 2 Integration
  
  While Vaadin Elements are built using Polymer, they also contain directives to enable seamless usage within Angular 2 applications.
  This page assumes that you already have an Angular 2 application setup ready.
  
  If you need help with the project setup, you should follow the https://angular.io/docs/ts/latest/quickstart.html[Angular 2 Quickstart] guide.
  
negative.code: == Installation
  
  [NOTE]
  
  Angular 2 support was introduced in `1.1.0-alpha1` versions of each element. +
  For element versions `1.1.0-beta2` or newer, use Angular version `2.0.0-rc.0`. +
  For element versions `1.1.0-alpha1 to 1.1.0-beta1`, use Angular version `2.0.0-beta.16/17`.
  
  
  Use https://www.npmjs.com/[npm] to install the generic polymer directive which allows the usage of any Polymer element in Angular 2.
  
  [source,bash]
  ----
  npm install vaadin/vaadin-ng2-polymer
  ----
  
  Although Angular 2 dependecies are typically installed via npm, Vaadin Elements require installation with http://bower.io[Bower].
  To install a Vaadin Core Element, first you should setup bower in your project, and then you need to run the following command in your project directory (replace the `[element-name]` part with the actual name of the element).
  
  [source,bash]
  