Update eslint-plugin-node to the latest version 🚀 (#68)

* chore(package): update eslint-plugin-node to version 8.0.0

* chore(package): update lockfile package-lock.json

Author: greenkeeper[bot]

package-lock.json

@@ -53,7 +53,7 @@
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-mocha": "^5.0.0",
     "eslint-plugin-mocha-only": "0.0.3",
-    "eslint-plugin-node": "^7.0.0",
+    "eslint-plugin-node": "^8.0.0",
     "eslint-plugin-promise": "^4.0.1",
     "istanbul": "^0.4.3",
     "jsdoc": "^3.5.5",