Examine source code of Timezone List

{
  "manifest_version": 2,
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "version": "0.2.1resigned1",
  "default_locale": "en",
  "applications": {
    "gecko": {
      "id": "timezonelist@samuelabreu.addons.mozilla.org"
    }
  },
  "browser_action": {
    "default_title": "Timezone List",
    "default_popup": "popup/button.html",
    "browser_style": true,
    "default_icon": {
      "16": "resources/icon-16.png",
      "32": "resources/icon-32.png"
    }
  },
  "icons": {
    "48": "resources/icon.png",
    "96": "resources/icon-96.png"
  }
}