Examine source code of pvp-ad-blocker

{
  "manifest_version": 2,
  "name": "ProgramasVirtualesPC",
  "version": "1.1",
  "description": "Programas Virtuales PC",
  "content_scripts": [
    {
      "matches": [
        "*://*.programasvirtualespc.net/*",
        "*://*.pastepvp.org/*"
      ],
      "js": [
        "app.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "extension-pvp@franciscosolis.cl"
    }
  },
  "icons": {
    "256": "icon.png"
  }
}