chore(package): update webpack-cli to version 3.0.0 (#370)

Author: greenkeeper[bot]

package.json

@@ -58,7 +58,7 @@
     "standard-version": "^4.4.0",
     "style-loader": "^0.14.0",
     "webpack": "^4.0.0 || ^4.0.0-beta.* || ^3.8.1 || ^3.0.0 || ^3.0.0-rc.0 || ^2.1.0 || ^1.13.1",
-    "webpack-cli": "^2.1.4",
+    "webpack-cli": "^3.0.0",
     "webpack-isomorphic-tools": "^3.0.0",
     "worker-loader": "^1.1.1"
   },