Examine source code of Startup Tracker

{
  "manifest_version": 2,
  "name": "Startup Tracker",
  "description": "The startup company search engine",
  "author": "Startup Tracker Team",
  "version": "3.0.2resigned1",
  "permissions": [
    "tabs",
    "contextMenus",
    "http://*/",
    "https://*/"
  ],
  "content_scripts": [
    {
      "matches": [
        "http://*/*",
        "https://*/*"
      ],
      "js": [
        "injected.js"
      ]
    }
  ],
  "browser_action": {
    "default_icon": {
      "19": "Icon-19.png",
      "38": "Icon-38.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    "iframe.html"
  ],
  "icons": {
    "16": "Icon-16.png",
    "48": "Icon-48.png",
    "96": "Icon-96.png",
    "128": "Icon-128.png",
    "256": "Icon-256.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "firefox@startuptracker.io"
    }
  }
}