chore(package): update eslint-plugin-node to version 9.2.0

Closes #16

Author: greenkeeper[bot]

package.json

@@ -62,7 +62,7 @@
     "eslint": "^4.15.0",
     "eslint-config-happiness": "^10.2.1",
     "eslint-plugin-import": "^2.7.0",
-    "eslint-plugin-node": "^5.1.1",
+    "eslint-plugin-node": "^9.2.0",
     "eslint-plugin-promise": "^3.5.0",
     "eslint-plugin-standard": "^3.0.1",
     "husky": "^0.14.3",