Examine source code of mattlaunch

{
  "manifest_version": 2,
  "name": "mattlaunch",
  "short_name": "mlaunch",
  "description": "Easy way to get to any of mmatt's crap.",
  "version": "1.13resigned1",
  "icons": {
    "16": "images/icon.png",
    "64": "images/icon_64.png",
    "128": "images/icon_128.png"
  },
  "browser_action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8ea71bd3-1288-4d67-b55c-48cb416e0aef}"
    }
  }
}