Examine source code of Growth Tracker

{
  "description": "Plant themed journal and mood tracker!",
  "manifest_version": 2,
  "name": "Growth Tracker",
  "version": "0.14",
  "permissions": [
    "storage"
  ],
  "homepage_url": "https://github.com/Namesnipes/Extension",
  "icons": {
    "16": "assets/icon16.png",
    "32": "assets/icon32.png",
    "48": "assets/icon48.png",
    "128": "assets/icon128.png"
  },
  "browser_action": {
    "default_popup": "main.html",
    "default_title": "Growth Tracker"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7f240ff8-2b50-44b3-b14a-c1df2a46f68d}"
    }
  }
}