Examine source code of Tic Tac Toe

{
  "description": "Lets you kill some boredom :) ",
  "manifest_version": 2,
  "name": "Tic Tac Toe",
  "version": "1.2resigned1",
  "homepage_url": "https://github.com/tsl143",
  "icons": {
    "48": "icons/logo_48.png"
  },
  "browser_action": {
    "default_icon": "icons/logo_32.png",
    "default_title": "Tic Tac Toe",
    "default_popup": "popup/play.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0295d4f0-34d0-42f3-bf34-4579830a5e2f}"
    }
  }
}