Merge "build: Upgrade grunt-eslint from 19.0.0 to 20.0.0"

diff --cc package.json
index e91f58b,022910a..8507238
--- 1/package.json
--- 2/package.json
+++ b/package.json
@@@ -14,10 -14,10 +14,10 @@@
      "grunt-banana-checker": "0.6.0",
      "grunt-contrib-copy": "1.0.0",
      "grunt-contrib-watch": "1.0.0",
-     "grunt-eslint": "19.0.0",
+     "grunt-eslint": "20.0.0",
      "grunt-jsonlint": "1.1.0",
      "grunt-karma": "2.0.0",
 -    "grunt-stylelint": "0.7.0",
 +    "grunt-stylelint": "0.8.0",
      "grunt-webdriver": "2.0.3",
      "karma": "1.5.0",
      "karma-chrome-launcher": "2.0.0",