Merge pull request #26 from jcoreio/greenkeeper/eslint-4.1.0

Update eslint to the latest version 🚀

Author: jedwards1211

package.json

@@ -63,7 +63,7 @@
     "chai": "^3.5.0",
     "copy": "^0.3.0",
     "coveralls": "^2.13.0",
-    "eslint": "^3.19.0",
+    "eslint": "^4.1.0",
     "eslint-plugin-flowtype": "^2.30.4",
     "eslint-watch": "^3.1.0",
     "flow-bin": "^0.43.1",