chore(package): update eslint to version 4.4.0

Author: greenkeeper[bot]

package.json

@@ -53,7 +53,7 @@
     "chai-spies-next": "^0.8.0",
     "chai-subset": "1.5.0",
     "coveralls": "2.13.1",
-    "eslint": "4.3.0",
+    "eslint": "4.4.0",
     "eslint-plugin-babel": "4.1.2",
     "eslint-plugin-flowtype": "2.35.0",
     "flow-bin": "0.52.0",