Bedazzle

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Bedazzle",
  "description": "A faux rich text editor for Twitter.  Adds unicode transforming functions to your Tweet editor on twitter.com",
  "version": "1.0",
  "content_scripts": [
    {
      "matches": [
        "*://twitter.com/*"
      ],
      "css": [
        "assets/style.css"
      ],
      "js": [
        "js/jquery-2.1.3.min.js",
        "js/unicate.js",
        "js/inject.js"
      ],
      "run_at": "document_end"
    }
  ],
  "icons": {
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "permissions": [
    "activeTab"
  ]
}