chore(package): update eslint to version 4.9.0

Closes #13

Author: greenkeeper[bot]

package.json

@@ -50,7 +50,7 @@
     "babel-preset-react": "^6.22.0",
     "babel-preset-react-hmre": "^1.1.1",
     "cz-conventional-changelog": "^2.0.0",
-    "eslint": "^3.14.1",
+    "eslint": "^4.9.0",
     "eslint-config-ak-base": "^5.3.0",
     "mutationobserver-shim": "^0.3.2",
     "pre-commit": "^1.2.2",