Examine source code of Licence Generator

{
  "name": "Licence Generator",
  "description": "Protect your Blogspot template with this addons",
  "icons": {
    "128": "icon.png"
  },
  "version": "0.0.1",
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "manifest_version": 2,
  "browser_action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "{c3211d48-7b74-4359-a406-377acc381843}"
    }
  }
}