fix(package): update regenerator-runtime to version 0.13.3

Closes #53

Author: greenkeeper[bot]

package.json

@@ -53,6 +53,6 @@
   "dependencies": {
     "webpack-dev-middleware": "1.12.0",
     "webpack-hot-middleware": "2.18.2",
-    "regenerator-runtime": "0.10.5"
+    "regenerator-runtime": "0.13.3"
   }
 }