Fix bower.json

Author: anthonykoerber

bower.json

@@ -40,7 +40,9 @@
     "polymer": "Polymer/polymer#1.3.0",
     "webcomponentsjs": "webcomponents/webcomponentsjs#0.7.21",
     "zousan": "~1.3.0",
-    "validator-js" : "4.4.0"
+    "validator-js" : "4.4.0",
+    "fetch": "~0.10.1",
+    "es6-promise": "~3.0.2"
   },
   "devDependencies": {
     "web-component-tester": "~3.3.22",