Add Debian package to package list in README

nitrocli/README.md

@@ -91,6 +91,7 @@ following dependencies are required:
 #### Via Packages
 Packages are available for:
 - Arch Linux: [`nitrocli`][nitrocli-arch] in the Arch User Repository
+- Debian: [`nitrocli`][nitrocli-debian] (since Debian Buster)
 - Gentoo Linux: [`app-crypt/nitrocli`][nitrocli-gentoo] ebuild
 
 #### From Crates.io
@@ -155,6 +156,7 @@ the full text of the license.
 [nitrokey-storage]: https://shop.nitrokey.com/shop/product/nitrokey-storage-2-16gb-23
 [nitrocli-arch]: https://aur.archlinux.org/packages/nitrocli
 [nitrocli-cratesio]: https://crates.io/crates/nitrocli
+[nitrocli-debian]: https://packages.debian.org/buster/nitrocli
 [nitrocli-gentoo]: https://packages.gentoo.org/packages/app-crypt/nitrocli
 [gplv3-tldr]: https://tldrlegal.com/license/gnu-general-public-license-v3-(gpl-3)
 [libnitrokey#32]: https://github.com/Nitrokey/libnitrokey/issues/32