chore(package): update dependencies

Author: greenkeeper[bot]

package.json

@@ -33,7 +33,7 @@
     "babel-eslint": "^7.2.3",
     "babel-preset-latest": "^6.24.1",
     "babel-preset-stage-3": "^6.24.1",
-    "eslint": "^3.19.0",
+    "eslint": "^4.0.0",
     "eslint-config-airbnb": "^15.0.1",
     "eslint-plugin-import": "^2.3.0",
     "eslint-plugin-jsx-a11y": "^5.0.3",