Create esnext template files.

Add package.json file and index page that can be used to load up/compile ES6 modules.
Set correct traceur runtime location.

Traceur runtime is currently located inside the traceur package.
Add in a System loader example to the index template page.

Provided a commented out example as to how to use the browser ES6 module System loader.
Also add a body tag to the index page.
Include the ES6 module loader polyfill.

The ES6 module loader polyfill allows dynamic loading of modules in the browser.