chore(): upgrade angular to beta.9

Author: hansl

addon/ng2/blueprints/ng2/files/package.json

@@ -13,7 +13,7 @@
   },
   "private": true,
   "dependencies": {
-    "angular2": "2.0.0-beta.8",
+    "angular2": "2.0.0-beta.9",
     "clang-format": "^1.0.35",
     "es6-promise": "^3.0.2",
     "es6-shim": "^0.33.3",