chore(package): update eslint to version 2.12.0

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -49,7 +49,7 @@
     "conventional-github-releaser": "1.1.2",
     "coveralls": "2.11.9",
     "css-loader": "0.23.1",
-    "eslint": "2.9.0",
+    "eslint": "2.12.0",
     "eslint-friendly-formatter": "2.0.4",
     "eslint-loader": "1.3.0",
     "eslint-plugin-html": "1.4.0",