Examine source code of ZipeZip

{
  "name": "ZipeZip",
  "version": "2",
  "short_name": "ZipeZip",
  "browser_action": {
    "default_icon": "logo_png.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "tabs"
  ],
  "manifest_version": 2
}