Examine source code of Morning Routine

{
  "description": "This addon lets you to specify a bunch of urls to be open when you click the coffee cup in the morning",
  "manifest_version": 2,
  "name": "Morning Routine",
  "version": "1.0",
  "author": "Javier Guzman",
  "homepage_url": "https://github.com/javierguzman/morning-routine",
  "icons": {
    "48": "icons/coffee-cup-48.png"
  },
  "browser_action": {
    "default_icon": {
      "48": "icons/coffee-cup-48.png"
    },
    "default_title": "Morning Routine"
  },
  "background": {
    "scripts": [
      "browser-polyfill.min.js",
      "morning.js"
    ]
  },
  "options_ui": {
    "page": "options.html"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@guzman.dev"
    }
  }
}