Examine source code of HackerNews2Bookmarks

{
  "manifest_version": 2,
  "name": "HackerNews2Bookmarks",
  "description": "Keep all your links from hacker news as local bookmarks",
  "version": "1.1",
  "icons": {
    "512": "icons/hn_bookmark.png"
  },
  "permissions": [
    "activeTab",
    "bookmarks",
    "storage"
  ],
  "background": {
    "scripts": [
      "background_scripts/background.js"
    ]
  },
  "browser_action": {
    "default_icon": "icons/hn_bookmark.png",
    "default_title": "Bookmark HN!",
    "default_popup": "popup/popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b34ce116-c895-4551-9de9-7d707c5a9817}"
    }
  }
}