chore(package): update eslint to version 4.3.0

Closes #99

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "atom-package-deps": "^4.3.1"
   },
   "devDependencies": {
-    "eslint": "^3.12.0",
+    "eslint": "^4.3.0",
     "eslint-config-airbnb-base": "^11.0.0",
     "eslint-plugin-import": "^2.2.0"
   },