Examine source code of Search splunk

{
  "manifest_version": 2,
  "name": "Search splunk",
  "author": "David Guan(davidguandev@gmail.com)",
  "description": "This extension help you Search questions, apps, docs in splunk answers, splunk base and splunk doc.",
  "version": "0.3resigned1",
  "icons": {
    "16": "assets/icon16.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "browser_action": {
    "default_icon": "assets/icon.png",
    "default_popup": "assets/popup.html"
  },
  "permissions": [],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d66a160e-5228-4628-9286-d79b0ec8689a}"
    }
  }
}