Material Plunker XHR issues

[itsJess1ca]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

Plunker example should load

What is the current behavior?

Whe loading the plunker, I get the loading state of "Loading the Angular Material App..." however the console gives me the following error:

zone.min.js:1 Error: (SystemJS) XHR error (404 Not Found) loading http://run.plnkr.co/6RW9gksgtEInIMCT/@angular/cdk.ts
	Error: XHR error (404 Not Found) loading http://run.plnkr.co/6RW9gksgtEInIMCT/@angular/cdk.ts
	    at d (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:10303)
	    at XMLHttpRequest.t [as _onreadystatechange] (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:730)
	    at e.invokeTask (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:15723)
	    at n.runTask (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:13076)
	    at XMLHttpRequest.invoke (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:16836)
	Error loading http://run.plnkr.co/6RW9gksgtEInIMCT/@angular/cdk.ts as "@angular/cdk" from https://rawgit.com/angular/material2-builds/master/bundles/material.umd.js
	    at d (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:10303)
	    at XMLHttpRequest.t [as _onreadystatechange] (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:730)
	    at e.invokeTask (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:15723)
	    at n.runTask (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:13076)
	    at XMLHttpRequest.invoke (https://cdnjs.cloudflare.com/ajax/libs/zone.js/0.7.2/zone.min.js:1:16836)
	Error loading http://run.plnkr.co/6RW9gksgtEInIMCT/@angular/cdk.ts as "@angular/cdk" from https://rawgit.com/angular/material2-builds/master/bundles/material.umd.js

What are the steps to reproduce?

Load the plunker template and open console
Plunker template: https://goo.gl/DlHd6U

What is the use-case or motivation for changing an existing behavior?

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Chrome

Is there anything else we should know?

[donroyco]

Already being tracked in #5285

[jelbourn]

Dupe of #5245

Please search for existing issues before filing.

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