Examine source code of hyphens

{
  "manifest_version": 2,
  "name": "hyphens",
  "version": "1.1resigned1",
  "description": "Adds hyphens to webpages",
  "icons": {
    "48": "icons/icon.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "js": [
        "hyphens.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{79dd121e-fa58-4151-a45d-18b3d75f8a99}"
    }
  }
}