Examine source code of Nebula CRM

{
  "manifest_version": 2,
  "name": "Nebula CRM",
  "description": "Nebula CRM Integration",
  "version": "1.3resigned1",
  "browser_action": {
    "default_icon": "images/nebula32.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "icons": {
    "16": "images/nebula16.png",
    "32": "images/nebula32.png",
    "48": "images/nebula48.png",
    "128": "images/nebula128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a7849407-95d1-44a4-a78b-b7b6e3a12a44}"
    }
  }
}