Update to eslint-config-airbnb-base v11.1.1 (#368)

* chore(package): update eslint-config-airbnb-base to version 11.1.1
* chore(package): update eslint to version 3.16.1

https://greenkeeper.io/

package.json

@@ -81,8 +81,8 @@
     "fs-plus": "^3.0.0"
   },
   "devDependencies": {
-    "eslint": "^3.12.0",
-    "eslint-config-airbnb-base": "^11.0.0",
+    "eslint": "^3.16.1",
+    "eslint-config-airbnb-base": "^11.1.1",
     "eslint-plugin-import": "^2.2.0"
   },
   "package-deps": [