chore(package): update eslint-config-airbnb to version 3.0.0

http://greenkeeper.io/

package.json

@@ -39,7 +39,7 @@
     "coveralls": "^2.11.6",
     "dora": "~0.2.2",
     "eslint": "~1.10.3",
-    "eslint-config-airbnb": "~2.1.0",
+    "eslint-config-airbnb": "~3.0.0",
     "expect": "~1.13.0",
     "mocha": "~2.3.4",
     "pre-commit": "~1.1.2",