Merge pull request #45 from punchcard-cms/greenkeeper-eslint-3.5.0

Update eslint to version 3.5.0 🚀

Author: scottnath

package.json

@@ -25,7 +25,7 @@
   "devDependencies": {
     "ava": "^0.14.0",
     "coveralls": "^2.11.9",
-    "eslint": "^2.13.1",
+    "eslint": "^3.5.0",
     "eslint-config-punchcard": "^1.0.1",
     "ghooks": "^1.3.2",
     "nyc": "^6.6.1",