Examine source code of Simple Shuffler

{
  "manifest_version": 2,
  "name": "Simple Shuffler",
  "version": "1.0",
  "description": "A list of words can be shuffled and displayed in a random order. This extension can also be used as a die by entering the numbers '1' to '6' as words and taking the first outcome.",
  "icons": {
    "48": "icons/simple_shuffler-48.png",
    "96": "icons/simple_shuffler-96.png"
  },
  "browser_action": {
    "default_icon": "icons/simple_shuffler-32.png",
    "default_title": "Simple Shuffler",
    "default_popup": "popup/simple_shuffler.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ac9ef0c0-15c3-4f86-9a92-24b925e957c4}"
    }
  }
}