chore(deps): update dependency eslint to v5 (#297)

Author: renovate[bot]

package.json

@@ -47,7 +47,7 @@
     "babel-register": "6.26.0",
     "conventional-changelog-cli": "2.0.5",
     "doctoc": "1.3.1",
-    "eslint": "4.19.1",
+    "eslint": "5.6.0",
     "eslint-config-algolia": "13.2.3",
     "eslint-config-prettier": "2.10.0",
     "eslint-plugin-import": "2.14.0",