chore(package): update babel-eslint to version 6.0.0

http://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -13,7 +13,7 @@
     "!dist/test"
   ],
   "devDependencies": {
-    "babel-eslint": "^5.0.0",
+    "babel-eslint": "^6.0.0",
     "broccoli-es6-module-transpiler": "^0.5.0",
     "broccoli-jshint": "^2.1.0",
     "broccoli-merge-trees": "^1.1.1",