Examine source code of The Social Collection

{
  "name": "The Social Collection",
  "version": "0.0.1",
  "manifest_version": 2,
  "browser_action": {
    "default_icon": "logo.png",
    "default_popup": "./index.html"
  },
  "icons": {
    "128": "logo.png"
  },
  "permissions": [
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{6d76b22a-6f67-4a0d-ba5a-4ec799ef3e75}"
    }
  }
}