Examine source code of Dreditor for firefox

{
  "author": "Brian Gilbert",
  "content_scripts": [
    {
      "js": [
        "dreditor.js"
      ],
      "matches": [
        "*://*.drupal.org/*"
      ]
    }
  ],
  "description": "An extension for Drupal.org that enhances user experience and functionality. Original author: Daniel F. Kudwien (sun).",
  "homepage_url": "https://github.com/BrianGilbert/dreditor-for-firefox",
  "icons": {
    "128": "icon.png"
  },
  "manifest_version": 2,
  "name": "Dreditor",
  "permissions": [
    "*://*.drupal.org/*"
  ],
  "version": "1.2.22",
  "browser_specific_settings": {
    "gecko": {
      "id": "{309c05ca-477b-44bc-9488-d2e050e97677}"
    }
  }
}