added content to README.md

README.md

@@ -11,6 +11,7 @@
 * [github.com/asaskevich/govalidator](https://github.com/asaskevich/govalidator) | Validator (server-sided)
 * [github.com/jackc/pgx/v5](https://github.com/jackc/pgx/v5) | PostgreSQL Driver & Toolkit
 * [github.com/xhit/go-simple-mail](https://github.com/xhit/go-simple-mail) | Golang package for sending e-mail
+* [Caddy 2](https://caddyserver.com/l) | Caddy 2 is a powerful, enterprise-ready, open source web server with automatic HTTPS written in Go
 
 🇬🇧 Also playing a part / 🇩🇪 ebenfalls eine Rolle spielen:
 * [github.com/twbs/bootstrap](https://github.com/twbs/bootstrap) | Bootstrap - HTML, CSS, and JavaScript framework (no jQuery) 
@@ -24,3 +25,5 @@
 * [github.com/jackc/pgx/v5](https://github.com/sweetalert2/sweetalert2) | SweetAlert2 - so many options for JavaScript popups
 * [github.com/mailhog/MailHog](https://github.com/mailhog/MailHog) | MailHog - Web and API based SMTP testing
 * [Foundation for Emails 2](https://get.foundation/emails.html) | Quickly create responsive HTML e-mails that work
+* [Cobra](https://cobra.dev) | A Framework for Modern CLI Apps in Go
+* [GoDotEnv](https://github.com/joho/godotenv) | A Go port of Ruby's dotenv library