Examine source code of Sitedux

{
  "manifest_version": 2,
  "name": "Sitedux",
  "description": "Sitedux browser extension enables user to save websites which can then be added to their personalized Sitedux dashboard",
  "version": "0.1",
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "browser_action": {
    "default_title": "Sitedux",
    "default_popup": "pages/popup.html"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{395c77b5-ab95-4cd8-9858-31084bc8832d}"
    }
  }
}