anchor.diff:  
   == Importing
   
  -
  -
  -Import the polymer directive as follows.
  +Import the Polymer directive as follows.
   
   [source,javascript]
   ----
  -import { PolymerElement } from '../node_modules/vaadin-ng2-polymer/polymer-element';
  +import { PolymerElement } from '../node_modules/@vaadin/angular2-polymer/polymer-element';
   ----
   
   Your Angular 2 component also needs to declare the usage of the directive.
  
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: 
  [source]
  ----
  <vaadin-grid #grid>
    <table>
      <colgroup>
        <col>
  