chore(package): update eslint-plugin-standard to version 4.0.1

Closes #230

Author: greenkeeper[bot]

Diff for: package.json

@@ -96,7 +96,7 @@
     "eslint-plugin-node": "^6.0.1",
     "eslint-plugin-promise": "^3.7.0",
     "eslint-plugin-react": "^7.7.0",
-    "eslint-plugin-standard": "^3.0.1",
+    "eslint-plugin-standard": "^4.0.1",
     "ignore-styles": "^5.0.1",
     "mongodb-memory-server": "^1.6.3",
     "nightwatch": "^1.0.1",