use react-at-rest beta3

Author: fortybillion

package.json

@@ -13,7 +13,7 @@
     "json-server": "^0.8.6",
     "lodash": "^3.10.1",
     "react": "^0.14.0",
-    "react-at-rest": "^1.0.0-beta1",
+    "react-at-rest": "^1.0.0-beta3",
     "react-dom": "^0.14.0"
   },
   "devDependencies": {