Examine source code of Quick Retweet

{
  "name": "Quick Retweet",
  "version": "1.0.0",
  "manifest_version": 2,
  "description": "Allows you to retweet without going through the quote tweet prompt",
  "icons": {
    "16": "images/icon_16.png",
    "19": "images/icon_19.png",
    "38": "images/icon_38.png",
    "128": "images/icon_128.png"
  },
  "browser_action": {
    "default_title": "QuickRT - Hold shift to quote",
    "default_icon": {
      "19": "images/icon_19.png",
      "38": "images/icon_38.png"
    }
  },
  "homepage_url": "http://stone.money/",
  "content_scripts": [
    {
      "js": [
        "js/quickrt.js"
      ],
      "css": [
        "css/quickrt.css"
      ],
      "matches": [
        "*://twitter.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5f352c34-bc4d-40b5-a040-eabfcf878170}"
    }
  }
}