Examine source code of Bookmarker

{
  "manifest_version": 2,
  "name": "Bookmarker",
  "version": "0.6.1",
  "description": "Bookmark tabs easier",
  "author": "TheNamlessGuy",
  "homepage_url": "https://github.com/TheNamlessGuy/bookmarker",
  "developer": {
    "name": "TheNamlessGuy",
    "url": "https://github.com/TheNamlessGuy/bookmarker"
  },
  "icons": {
    "48": "res/icons/favorited/48.light.png"
  },
  "permissions": [
    "<all_urls>",
    "activeTab",
    "bookmarks",
    "storage",
    "unlimitedStorage"
  ],
  "page_action": {
    "browser_style": true,
    "default_icon": {
      "48": "res/icons/processing/48.light.gif"
    },
    "default_title": "Bookmarker"
  },
  "background": {
    "scripts": [
      "common/browser/background/base-options.js",
      "src/options/opts.js",
      "src/communication.js",
      "src/bookmarks.js",
      "src/tabs.js",
      "src/icon.js",
      "src/andthen.js",
      "src/popups.js",
      "src/background.js"
    ]
  },
  "options_ui": {
    "page": "src/options/page/index.html",
    "browser_style": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "bookmarker@TheNamlessGuy.github.io"
    }
  }
}