chore(package): update eslint to version 3.2.0

https://greenkeeper.io/

package.json

@@ -15,7 +15,7 @@
     "babel-preset-es2015": "6.6.0",
     "babel-preset-react": "6.5.0",
     "coveralls": "2.11.9",
-    "eslint": "2.5.3",
+    "eslint": "3.2.0",
     "eslint-config-airbnb": "6.2.0",
     "eslint-plugin-react": "4.2.3",
     "isparta": "4.0.0",