update eslint

Author: amranidev

package.json

@@ -30,7 +30,7 @@
         "babel-loader": "^6.4.1",
         "babel-preset-env": "^1.3.3",
         "babel-preset-stage-2": "^6.18.0",
-        "eslint": "^3.14.1",
+        "eslint": "^4.18.2",
         "eslint-config-standard": "^6.2.1",
         "eslint-plugin-html": "^2.0.0",
         "eslint-plugin-promise": "^3.4.0",