Examine source code of Little Proxy

{
  "manifest_version": 2,
  "name": "Little Proxy",
  "version": "1.10resigned1",
  "author": "jsdeveloper",
  "homepage_url": "https://addons.mozilla.org/en-US/firefox/addon/little-proxy/",
  "description": "Manage Your Proxy Servers Easily",
  "icons": {
    "200": "icons/p.png"
  },
  "permissions": [
    "activeTab",
    "proxy",
    "storage"
  ],
  "browser_action": {
    "default_icon": "icons/p.png",
    "default_title": "My Proxies",
    "default_popup": "settings.htm"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0dc38601-b5ae-4af6-94e8-152cf2efa003}"
    }
  }
}