Like First: youtube edition

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Like First: youtube edition",
  "version": "0.0.2",
  "description": "A Like-first extension for Youtube. Leave a positive footprint, like first!",
  "permissions": [
    "storage"
  ],
  "options_page": "options.html",
  "icons": {
    "16": "images/get_started16.png",
    "32": "images/get_started32.png",
    "48": "images/get_started48.png",
    "128": "images/get_started128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://youtube.com/*",
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "manifest_version": 2
}