When I want to load polymer 2:
<script src="https://cdn.rawgit.com/download/polymer-cdn/2.0.1/lib/webcomponentsjs/webcomponents-loader.js"></script>
<link rel="import" href="https://cdn.rawgit.com/download/polymer-cdn/2.0.1/lib/polymer/polymer.html">
what I got is Polymer 1.9
as you can see in readme file, everywhere is polymer#1.9.2 instead of 2.x