Examine source code of minus.js

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "minus.js",
  "description": "A whole host of JS shortcuts, for the DOM hacker.",
  "version": "0.5.1resigned1",
  "content_scripts": [
    {
      "run_at": "document_end",
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "attachIt.js"
      ]
    }
  ],
  "web_accessible_resources": [
    "minus.js"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{06eccd2f-087b-4adf-9294-95318d7e17cf}"
    }
  }
}