Get English Right!

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "manifest_version": 2,
  "name": "Get English Right!",
  "description": "A Chrome extension that helps you improve your command of English, one phrase at a time.",
  "version": "1.2",
  "browser_action": {
    "default_icon": "icon32.png",
    "default_popup": "question.html"
  },
  "icons": {
    "16": "icon16.png",
    "32": "icon32.png",
    "48": "icon48.png",
    "64": "icon64.png",
    "128": "icon128.png"
  },
  "content_security_policy": "script-src 'self' https://*.firebase.com  https://*.firebaseio.com https://platform.twitter.com/widgets.js https://connect.facebook.net https://ajax.googleapis.com; object-src 'self'",
  "permissions": [
    "storage",
    "management",
    "background"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}