Examine source code of Hustle Informer

{
  "manifest_version": 2,
  "name": "Open hustleinformer.com",
  "version": "1.0",
  "description": "Opens hustleinformer.com",
  "icons": {
    "48": "logo.png"
  },
  "background": {
    "scripts": [
      "hustleinformer.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "logo.png",
      "32": "logo.png"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b67a458c-8187-43ca-a84f-cfa0a41f034b}"
    }
  }
}