Examine source code of One Red Maple

{
  "name": "One Red Maple Ecommerce Extension",
  "version": "3.4",
  "manifest_version": 2,
  "description": "Driving Business to your local community, one sale at a time",
  "homepage_url": "http://oneredmaple.com",
  "icons": {
    "16": "assets/icons/logo_16.png",
    "32": "assets/icons/logo_32.png",
    "48": "assets/icons/logo_48.png",
    "64": "assets/icons/logo_64.png",
    "128": "assets/icons/logo_128.png"
  },
  "default_locale": "en",
  "permissions": [
    "storage",
    "geolocation"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://*/*"
      ],
      "js": [
        "inject.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "*",
    "assets/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{ef86cef2-36f2-4acb-b34e-fa46e69cf2b8}"
    }
  }
}