chore(build): use ^2.0.0 ng2 deps

Author: christopherthielen

package.json

@@ -52,16 +52,16 @@
     "ui-router-core": "=1.0.1"
   },
   "peerDependencies": {
-    "@angular/core": "~2.0.0",
-    "@angular/common": "~2.0.0"
+    "@angular/core": "^2.0.0",
+    "@angular/common": "^2.0.0"
   },
   "devDependencies": {
-    "@angular/common": "~2.0.0",
-    "@angular/compiler": "~2.0.0",
-    "@angular/core": "~2.0.0",
-    "@angular/platform-browser": "~2.0.0",
-    "@angular/platform-browser-dynamic": "~2.0.0",
-    "@angular/platform-server": "~2.0.0",
+    "@angular/common": "^2.0.0",
+    "@angular/compiler": "^2.0.0",
+    "@angular/core": "^2.0.0",
+    "@angular/platform-browser": "^2.0.0",
+    "@angular/platform-browser-dynamic": "^2.0.0",
+    "@angular/platform-server": "^2.0.0",
     "@types/jasmine": "^2.2.34",
     "@types/jquery": "^1.10.31",
     "awesome-typescript-loader": "^2.2.4",