Examine source code of Pie Rewards Browser Extension

{
  "short_name": "Pie Rewards",
  "name": "Pie Rewards",
  "description": "Love shopping but sick of existing loyalty programs? Interested in investing? Pie Rewards lets you shop with your favourite brands and get rewarded with investments!",
  "version": "1.4",
  "manifest_version": 2,
  "browser_action": {
    "default_popup": "index.html",
    "default_title": "Open the popup",
    "default_icon": {
      "48": "logo48.png",
      "96": "logo96.png"
    }
  },
  "icons": {
    "48": "logo48.png",
    "96": "logo96.png"
  },
  "permissions": [
    "tabs",
    "activeTab",
    "webNavigation",
    "storage",
    "notifications",
    "declarativeNetRequest"
  ],
  "optional_permissions": [
    "activeTab",
    "<all_urls>"
  ],
  "web_accessible_resources": [
    "http://*/*",
    "https://*/*",
    "logo192.png"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "css": [
        "contentScript.css"
      ],
      "js": [
        "contentScript.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{95da6405-5bc3-4825-9d6a-c5e84721c4c9}"
    }
  }
}