Examine source code of InteraApps Accounts

{
  "name": "InteraApps Accounts",
  "description": "InteraApps accounts addon",
  "version": "1.0.4",
  "author": "InteraApps",
  "manifest_version": 2,
  "browser_action": {
    "default_icon": "images/icon128.png",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "icons": {
    "16": "images/icon16.png",
    "32": "images/icon32.png",
    "48": "images/icon48.png",
    "64": "images/icon64.png",
    "128": "images/icon128.png"
  }
}