Examine source code of Lamplight

{
  "description": "Illuminate the web.",
  "manifest_version": 2,
  "name": "Lamplight",
  "version": "1.9.9resigned1",
  "homepage_url": "https://pixelgiant.co",
  "icons": {
    "48": "icons/Lamplight-48.png"
  },
  "permissions": [
    "<all_urls>",
    "tabs",
    "activeTab",
    "storage"
  ],
  "background": {
    "scripts": [
      "background-script.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content-script.js"
      ]
    }
  ],
  "browser_action": {
    "browser_style": true,
    "default_title": "Lamplight",
    "default_icon": "icons/Lamplight-48.png",
    "default_popup": "popup/Lamplight.html"
  },
  "options_ui": {
    "page": "settings/options.html"
  },
  "applications": {
    "gecko": {
      "id": "lamplight@pixelgiant.co"
    }
  }
}