chore(package): update eslint-plugin-node to version 6.0.0 (#162)

Author: greenkeeper[bot]

package.json

@@ -84,7 +84,7 @@
     "eslint": "^4.8.0",
     "eslint-config-standard": "^10.2.1",
     "eslint-plugin-import": "^2.7.0",
-    "eslint-plugin-node": "^5.2.0",
+    "eslint-plugin-node": "^6.0.0",
     "eslint-plugin-promise": "^3.5.0",
     "eslint-plugin-react": "^7.4.0",
     "eslint-plugin-standard": "^3.0.1",