Examine source code of Neila

{
  "version": "3.1.3resigned1",
  "default_locale": "fr",
  "name": "Neila Live Notifier",
  "description": "Extension pour suivre les lives de Neila",
  "background": {
    "persistent": true,
    "scripts": [
      "./src/background.js"
    ]
  },
  "author": "Nucktrooper",
  "manifest_version": 2,
  "icons": {
    "128": "icon.png"
  },
  "permissions": [
    "notifications"
  ],
  "optional_permissions": [
    "background"
  ],
  "options_ui": {
    "open_in_tab": true,
    "page": "options/options.html"
  },
  "browser_action": {
    "default_icon": {
      "19": "data/Button_OFF.png"
    },
    "default_popup": "./popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "neila@btnlive.com"
    }
  }
}