Examine source code of PopHub - GitHub Client

{
  "manifest_version": 2,
  "name": "PopHub - GitHub to Extension Popup",
  "version": "1.0.2",
  "description": "Access GitHub right from your Extension's Popup.",
  "developer": {
    "name": "Siddhartha Sarkar",
    "url": "https://github.com/siddsarkar/pophub"
  },
  "icons": {
    "256": "assets/images/logo-bordered-256.png"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ]
  },
  "browser_action": {
    "default_icon": {
      "16": "assets/images/github.svg"
    },
    "default_title": "PopHub",
    "default_popup": "popup.html",
    "theme_icons": [
      {
        "dark": "assets/images/github.svg",
        "light": "assets/images/github_light.svg",
        "size": 16
      }
    ]
  },
  "permissions": [
    "identity",
    "storage",
    "*://*.github.com/"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "mini-hub@siddsarkar.github.io"
    }
  }
}