Tynker - Learn to code

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Tynker - Learn to code",
  "short_name": "Tynker",
  "description": "Tynker is the easiest way to learn programming. Start by playing games and solving puzzles.",
  "author": "Tynker",
  "version": "1.0",
  "manifest_version": 2,
  "minimum_chrome_version": "42",
  "permissions": [],
  "app": {
    "urls": [
      "https://www.tynker.com/chrome/student"
    ],
    "launch": {
      "web_url": "https://www.tynker.com/chrome/student"
    }
  },
  "icons": {
    "29": "icons/tynker-icon-29.png",
    "40": "icons/tynker-icon-40.png",
    "50": "icons/tynker-icon-50.png",
    "58": "icons/tynker-icon-58.png",
    "72": "icons/tynker-icon-72.png",
    "76": "icons/tynker-icon-76.png",
    "80": "icons/tynker-icon-80.png",
    "100": "icons/tynker-icon-100.png",
    "120": "icons/tynker-icon-120.png",
    "128": "icons/tynker-icon-128.png",
    "144": "icons/tynker-icon-144.png",
    "152": "icons/tynker-icon-152.png",
    "512": "icons/tynker-icon-512.png",
    "1024": "icons/tynker-icon-1024.png"
  }
}