Sound Effects for Trello

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Sound Effects for Trello",
  "description": "Plays sound effects for various Trello actions. This is not an official Trello app!",
  "version": "1.0.2",
  "icons": {
    "16": "SEFTicon16.png",
    "48": "SEFTicon48.png",
    "128": "SEFTicon128.png"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://trello.com/b/*"
      ],
      "js": [
        "script.js"
      ],
      "run_at": "document_end"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  }
}