Trello Horizontal Scroll

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Trello Horizontal Scroll",
  "description": "Enables Horizontal Scroll in Trello",
  "version": "3.1.1",
  "permissions": [
    "https://trello.com/*",
    "storage"
  ],
  "background": {
    "scripts": [
      "jquery.min.js",
      "jquery.mousewheel.js",
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "128": "TrelloHorizontalScroll128.png"
  },
  "options_ui": {
    "page": "options.html",
    "chrome_style": true
  },
  "manifest_version": 2,
  "content_scripts": [
    {
      "matches": [
        "https://trello.com/*"
      ],
      "js": [
        "jquery.min.js",
        "jquery.mousewheel.js",
        "background.js"
      ]
    }
  ]
}