docs: complete es6-shim to core-js migration

closes #1442

public/docs/_examples/webpack/ts/config/karma-test-shim.js

@@ -1,7 +1,7 @@
 // #docregion
 Error.stackTraceLimit = Infinity;
 
-require('es6-shim');
+require('core-js/es6');
 require('reflect-metadata');
 
 require('zone.js/dist/zone');

public/docs/_examples/webpack/ts/package.webpack.json

@@ -17,7 +17,7 @@
     "@angular/platform-browser": "2.0.0-rc.1",
     "@angular/platform-browser-dynamic": "2.0.0-rc.1",
     "@angular/router-deprecated": "2.0.0-rc.1",
-    "es6-shim": "^0.35.0",
+    "core-js": "^2.4.0",
     "reflect-metadata": "0.1.2",
     "rxjs": "5.0.0-beta.6",
     "zone.js": "0.6.12"

public/docs/_examples/webpack/ts/src/polyfills.ts

@@ -1,5 +1,5 @@
 // #docregion
-import 'es6-shim';
+import 'core-js/es6';
 import 'reflect-metadata';
 require('zone.js/dist/zone');
 

public/docs/_examples/webpack/ts/typings.1.json

@@ -1,6 +1,6 @@
 {
   "ambientDependencies": {
-    "es6-shim": "registry:dt/es6-shim#0.31.2+20160317120654",
+    "core-js": "registry:dt/core-js#0.0.0+20160317120654",
     "jasmine": "registry:dt/jasmine#2.2.0+20160412134438",
     "node": "registry:dt/node#4.0.0+20160509154515"
   }