Update eslint to the latest version 🚀 (#5)

* chore(package): update eslint to version 6.0.0

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

Author: greenkeeper[bot]

package-lock.json

@@ -50,7 +50,7 @@
     "commitizen": "^3.0.5",
     "coveralls": "^3.0.2",
     "cz-conventional-changelog": "^2.1.0",
-    "eslint": "^5.9.0",
+    "eslint": "^6.0.0",
     "eslint-config-standard": "^12.0.0",
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-node": "^9.0.0",