anchor.diff:  
   [source]
   ----
  -<vaadin-grid #grid [items]="dataItems">
  +<vaadin-grid #grid>
     <table>
       <colgroup>
         <col>
  
positive.code: 
  [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].
  
negative.code: 
  == Importing
  
  Import the Polymer directive as follows.
  
  [source,javascript]
  ----
  import { PolymerElement } from '../node_modules/@vaadin/angular2-polymer/polymer-element';
  ----
  
  Your Angular 2 component also needs to declare the usage of the directive.
  