Examine source code of Browser Storage Manager

{
  "manifest_version": 2,
  "name": "Browser Storage Manager",
  "version": "0.2",
  "description": "Adds buttons to export/import your browser storage from/to a file.",
  "homepage_url": "https://github.com/lawruble13/browser_storage_manager",
  "icons": {
    "48": "icons/browser_export_48.png",
    "96": "icons/browser_export_96.png"
  },
  "permissions": [
    "activeTab",
    "downloads"
  ],
  "browser_action": {
    "default_icon": "icons/browser_export.png",
    "default_title": "Manage Browser Storage",
    "default_popup": "popup/choose_action.html"
  },
  "background": {
    "scripts": [
      "background_scripts/background.js"
    ],
    "persistent": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0c617e1e-9a62-47b9-ac15-b1b7f863ddf7}"
    }
  }
}