Examine source code of Job Application Tracker

{
  "manifest_version": 2,
  "name": "Job Application Tracker",
  "version": "1.0",
  "description": "Track your job applications in the browser.",
  "browser_specific_settings": {
    "gecko": {
      "id": "addon@shanku.com",
      "strict_min_version": "58.0"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "Job Application Tracker"
  },
  "permissions": [
    "storage"
  ],
  "icons": {
    "16": "images/icon16.png",
    "48": "images/icon48.png",
    "128": "images/icon128.png"
  }
}