Examine source code of AC Clicker

{
  "name": "AC Clicker",
  "version": "1.0",
  "version_name": "1.0-Firefox",
  "manifest_version": 2,
  "description": "Automatically clicks the CKS button for ACSemble",
  "homepage_url": "https://seetow.com",
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": true
  },
  "icons": {
    "32": "formfiller-32.png",
    "48": "formfiller-ms.png"
  },
  "browser_action": {
    "default_title": "Go!"
  },
  "permissions": [
    "activeTab"
  ]
}