chore(package): Update eslint to the latest version 🚀 (#64)

* chore(package): update eslint to version 4.19.0

* chore(package): update lockfile

https://npm.im/greenkeeper-lockfile

Author: greenkeeper[bot]

package-lock.json

@@ -43,7 +43,7 @@
   "homepage": "https://github.com/bucharest-gold/nodejs-rest-http-secured",
   "devDependencies": {
     "coveralls": "^3.0.0",
-    "eslint": "~4.18.0",
+    "eslint": "~4.19.0",
     "eslint-config-semistandard": "~12.0.0",
     "eslint-config-standard": "~11.0.0-beta.0",
     "eslint-plugin-import": "^2.7.0",