chore(package): update eslint to version 4.2.0

Closes #27

Author: greenkeeper[bot]

package.json

@@ -12,7 +12,7 @@
   },
   "devDependencies": {
     "@neogeek/eslint-config-standards": "^1.15.0",
-    "eslint": "^3.19.0"
+    "eslint": "^4.2.0"
   },
   "peerDependencies": {
     "doxdox": "~2.0.3"