chore(package): update eslint to version 5.0.0

Author: greenkeeper[bot]

package.json

@@ -13,7 +13,7 @@
   "devDependencies": {
     "babel-core": "^6.26.0",
     "babel-plugin-transform-es2015-modules-commonjs": "^6.26.0",
-    "eslint": "^4.18.2",
+    "eslint": "^5.0.0",
     "husky": "^0.14.3",
     "lint-staged": "^7.0.0",
     "mocha": "^5.0.1"