Examine source code of Powiadamiacz EmSc2.Tv

{
  "background": {
    "persistent": true,
    "scripts": [
      "jquery-2.0.3.min.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_icon": "files/icon-offline.png",
    "default_popup": "popup.html"
  },
  "description": "Powiadamiacz, który pozwoli Ci być na bieżąco ze streamem Emila emsc2.tv",
  "homepage_url": "http://www.emsc2.tv/",
  "icons": {
    "48": "files/icon-48.png",
    "128": "files/icon-128.png"
  },
  "manifest_version": 2,
  "name": "Powiadamiacz EmSc2.Tv",
  "permissions": [
    "http://api.emsc2.tv/*",
    "http://tmi.twitch.tv/*",
    "https://api.twitch.tv/*",
    "notifications",
    "storage",
    "alarms"
  ],
  "version": "1.1",
  "web_accessible_resources": [
    "files/avatar.jpg"
  ]
}