bump eslint version

Author: erossignon

package.json

@@ -15,7 +15,7 @@
   "devDependencies": {
     "aws-sdk": "2.x",
     "electron-rebuild": "^1.5.11",
-    "eslint": "^3.19.0",
+    "eslint": "^4.0.0",
     "eslint-config-standard": "^10.2.1",
     "eslint-plugin-promise": "^3.5.0",
     "eslint-plugin-require-path-exists": "^1.1.7",