This is incomplete in several respects

• Let's keep shims together. The new polyfil should be moved up near (just below?) the other browser shim. If it must be where it is, explain why.
• We can't get this from npm? Why. We strive to have development work entirely offline w/o any 404s.
• If we can install with npm, must update plunker tool to map back to the web (using npmcdn preferably).
• Explain why this shim is needed in this example and not everywhere. If only here, must update the chapter so that the reader knows to add this shim.
• If should add this shim everywhere, then explain in the Quickstart and add to all index.html.
• If should add this shim everywhere, reconcile with the CLI's position on shims (I don't know what that is).

Sorry, I know this is a royal PITA. But just slapping a shim into the example is not the answer.