Issue 3692 - Enable the no-unused-vars ESLint rule

eslint-config-eyeo/package.json

 {
   "name": "eslint-config-eyeo",
-  "version": "1.0.0",
+  "version": "1.0.1",

[Sebastian Noack, 2017/02/21 11:16:20]

Do we even have this package already published on npmjs? Otherwise, we don't
need to bump the version.

[kzar, 2017/02/21 11:31:03]

Yea I did.

[Sebastian Noack, 2017/02/21 11:33:53]

I see. It just seems a little inconsistent that we have 4 changes, to
eslint-config-eyeo now, while only one of them bumps the version number. Also,
considering that there is no separate issue for these changes, it seems cleanest
to just combine them into one patch.

[kzar, 2017/02/21 11:42:41]

Yea, I plan to combine all four into one patch. When I created this review I
didn't expect to create the other three shortly afterwards. 

[Sebastian Noack, 2017/02/21 11:53:54]

LGTM, if all 4 changes will be combined into one commit.

   "description": "ESLint configuration as used by eyeo.",
   "main": "index.js",
   "repository": {
     "type": "hg",
     "url": "https://hg.adblockplus.org/codingtools"
   },
   "keywords": [
     "eyeo",
     "adblockplus",
     "abp",
     "eslint",
     "eslintconfig"
   ],
   "author": {
     "name": "eyeo GmbH",
     "url": "https://eyeo.com/"
   },
   "license": "GPL-3.0",
   "bugs": {
     "url": "https://issues.adblockplus.org/"
   },
   "peerDependencies": {
     "eslint": ">= 3.14.1"
   }
 }