Examine source code of Sticky Navigation

{
  "manifest_version": 2,
  "name": "Sticky Navigation",
  "version": "1.0",
  "description": "Keep important buttons pinned to the screen.",
  "permissions": [
    "activeTab",
    "tabs"
  ],
  "browser_action": {
    "default_title": "Sticky Navigation",
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d94de43e-acbe-4700-8d05-b4fcdeadef1b}"
    }
  }
}