chore(package): update eslint-config-airbnb-base to version 14.0.0

Closes #13

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "coveralls": "^3.0.3",
     "del": "^3.0.0",
     "eslint": "^4.9.0",
-    "eslint-config-airbnb-base": "^12.1.0",
+    "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-import": "^2.9.0",
     "istanbul": "^1.1.0-alpha.1",
     "json-stable-stringify": "^1.0.1",