Examine source code of Progressive Shopperuu

{
  "short_name": "Progressive Shopper",
  "name": "Progressive Shopper",
  "description": "Progressive Shopper",
  "page_action": {
    "default_title": "Progressive Shopper",
    "default_icon": "static/images/bookmark-grey.png"
  },
  "manifest_version": 2,
  "version": "0.1.9",
  "author": "",
  "content_scripts": [
    {
      "js": [
        "static/js/library/jquery.js",
        "static/js/contentscript.js"
      ],
      "matches": [
        "https://*/*"
      ]
    }
  ],
  "background": {
    "scripts": [
      "static/js/library/jquery.js",
      "config.js",
      "static/js/eventPage.js"
    ]
  },
  "permissions": [],
  "icons": {
    "16": "static/images/icon16.png",
    "48": "static/images/icon48.png",
    "128": "static/images/icon128.png"
  },
  "web_accessible_resources": [
    "index.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d5bde596-5a14-467d-b437-945b542e7e14}"
    }
  }
}