Examine source code of Super Comic Buttons

{
  "manifest_version": 2,
  "name": "Super Comic Buttons",
  "version": "2.1",
  "description": "Tracks the updates of your favourite webcomics (or anything with an rss feed)",
  "homepage_url": "https://github.com/WFrankish/super-comic-buttons.git",
  "background": {
    "page": "background.html"
  },
  "browser_action": {
    "default_title": "Super Comic Button",
    "default_icon": {
      "16": "button/icon-16.png",
      "32": "button/icon-32.png",
      "64": "button/icon-64.png",
      "256": "button/icon-256.png"
    },
    "default_popup": "popup.html"
  },
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "192": "icons/icon-192.png"
  },
  "options_ui": {
    "chrome_style": true,
    "browser_style": true,
    "page": "options.html"
  },
  "permissions": [
    "alarms",
    "notifications",
    "storage",
    "tabs",
    "http://*/",
    "https://*/"
  ],
  "sidebar_action": {
    "default_icon": {
      "16": "button/icon-16.png",
      "32": "button/icon-32.png",
      "64": "button/icon-64.png",
      "256": "button/icon-256.png"
    },
    "default_title": "Super Comic Buttons: Menu",
    "default_panel": "menu.html"
  }
}