chore: update to beta.12

CHANGELOG.md

+<a name="0.1.12"></a>
+# 0.1.12 (2016-03-23)
+* update packages
+  * Angular 2 beta 12
+  * zones 0.6.6
+* remove es6-promise because no longer needed.
+
 <a name="0.1.11"></a>
 # 0.1.11 (2016-03-18)
 * update packages

package.json

@@ -11,13 +11,12 @@
   },
   "license": "ISC",
   "dependencies": {
-    "angular2": "2.0.0-beta.11",
+    "angular2": "2.0.0-beta.12",
     "systemjs": "0.19.24",
-    "es6-promise": "^3.0.2",
     "es6-shim": "^0.35.0",
     "reflect-metadata": "0.1.2",
     "rxjs": "5.0.0-beta.2",
-    "zone.js": "0.6.4"
+    "zone.js": "0.6.6"
   },
   "devDependencies": {
     "concurrently": "^2.0.0",