Library that automatically initializes polymer elements without having to write a main for your application.
If a polymer application is written entirely with <polymer-element> tags
and there is no initialization code that needs to happen before these
elements are created, then, instead of creating your own main, you can
simply include a script tag loading this library:
<script type="application/dart">export "package:polymer/init.dart"; </script>
This script tag should be placed after all HTML imports on your page.
Returns a Future that code should be executed in for dirty checking.
The returned future will complete once polymer is ready and all @initMethod
and @whenPolymerReady functions have been executed.