Examine source code of Cashbe

{
  "name": "Cashbe",
  "short_name": "Cashbe",
  "version": "1.0.0",
  "manifest_version": 2,
  "description": "Cashbe",
  "icons": {
    "32": "icons/icon-32.png",
    "64": "icons/icon-64.png",
    "128": "icons/icon-128.png"
  },
  "browser_action": {
    "default_icon": "icons/icon-128.png",
    "default_popup": "popup.html",
    "default_title": "Cashbe"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "troywell@mozac.com"
    }
  },
  "permissions": [
    "tabs",
    "storage",
    "unlimitedStorage",
    "activeTab",
    "nativeMessaging"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "content_scripts": [
    {
      "all_frames": false,
      "js": [
        "vendors/vendors.js",
        "content/content.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "*.css",
    "*.png"
  ],
  "background": {
    "scripts": [
      "vendors/vendors.js",
      "bg/bg.js"
    ],
    "persistent": false
  }
}