fix(package): update webpack to version 3.2.0

Closes #18

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "react-redux": "5.0.4",
     "redux": "3.6.0",
     "redux-logger": "3.0.1",
-    "webpack": "^2.3.3"
+    "webpack": "^3.2.0"
   },
   "jest": {
     "moduleFileExtensions": [