feat(angular): update to angular 2.0.0-beta.15

Author: SteveVanOpstal

package.json

@@ -47,7 +47,7 @@
     "postinstall": "npm run typings-install"
   },
   "dependencies": {
-    "angular2": "2.0.0-beta.13",
+    "angular2": "2.0.0-beta.15",
     "async": "1.5.2",
     "core-js": "2.2.1",
     "d3": "3.5.16",
@@ -58,7 +58,7 @@
     "rxjs": "5.0.0-beta.2",
     "tinytim": "0.1.1",
     "tracer": "0.8.3",
-    "zone.js": "0.6.6"
+    "zone.js": "0.6.11"
   },
   "devDependencies": {
     "awesome-typescript-loader": "^0.17.0-rc.2",