Examine source code of Language Transliteration

{
  "name": "Language Transliteration",
  "description": "Language Transliteration - Type in your own language",
  "version": "4.6resigned1",
  "manifest_version": 2,
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "48": "icons/transliteration.png"
  },
  "browser_action": {
    "default_icon": "icons/transliteration.png",
    "default_title": "Language Transliteration - Type in your own language",
    "default_popup": "popup/transliteration.html"
  },
  "commands": {
    "_execute_browser_action": {
      "suggested_key": {
        "default": "Alt+L"
      },
      "description": "Language Transliteration - Type in your own language"
    }
  },
  "options_ui": {
    "page": "options/options.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7e7e749d-f17c-4bfd-97f6-c01e5bbd928b}"
    }
  }
}