Examine source code of Minecraft Server Status

{
  "manifest_version": 2,
  "name": "Minecraft Server Status",
  "version": "1.3.0",
  "description": "Look the status of your favorite minecraft servers !",
  "author": "Krafting",
  "homepage_url": "https://www.krafting.net/projects.php",
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  },
  "applications": {
    "gecko": {
      "id": "mcserverstatus@krafting.net"
    }
  },
  "options_ui": {
    "page": "options.html"
  },
  "browser_action": {
    "default_icon": "images/icon128.png",
    "default_title": "Minecraft Server Status",
    "default_popup": "popup.html"
  }
}