Examine source code of Dictionary Meaning

{
  "manifest_version": 2,
  "name": "Dictionary Meaning",
  "description": "Get the selected text's meaning within a click.",
  "version": "1.1resigned1",
  "icons": {
    "48": "icons/rsz_iconn.png",
    "96": "icons/rsz_1iconn.png"
  },
  "permissions": [
    "contextMenus"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{030c1aa9-3cee-448b-9c34-bf2840e7fb14}"
    }
  }
}