Add new item, nnn: terminal file manager (#58)

* Add new item, nnn: terminal file manager

* Add new item, mcabber: XMPP (Jabber) client

* Add new item, botany: Virtual plant buddy

Co-authored-by: Justin Garrison <justin@linux.com>

README.md

@@ -27,6 +27,7 @@ List of projects that provide terminal user interfaces
 - [dockly](https://github.com/lirantal/dockly) Immersive terminal interface for managing docker containers and services
 - [dry](https://github.com/moncho/dry) A Docker manager for the terminal
 - [fff](https://github.com/dylanaraps/fff) A simple file manager written in bash.
+- [nnn](https://github.com/jarun/nnn) n³ The unorthodox terminal file manager
 - [Glances](https://github.com/nicolargo/glances) Glances an Eye on your system. A top/htop alternative.
 - [Glow](https://github.com/charmbracelet/glow) Render markdown on the CLI, with pizzazz!
 - [Goaccess](https://github.com/allinurl/goaccess) GoAccess is a real-time web log analyzer and interactive viewer that runs in a terminal in nix systems or through your browser.
@@ -67,6 +68,7 @@ List of projects that provide terminal user interfaces
 
 - [2048-cli](https://github.com/tiehuis/2048-cli) The game 2048 for your Linux terminal
 - [bastet](https://github.com/fph/bastet) Evil falling block game
+- [botany](https://github.com/jifunks/botany/) Virtual plant buddy
 - [Gameboy Emulator](https://github.com/gabrielrcouto/php-terminal-gameboy-emulator) A PHP Terminal GameBoy Emulator
 - [go-life](https://github.com/sachaos/go-life) Terminal based Conway's Game of Life
 - [Greed](https://gitlab.com/esr/greed) A game of consumption. Eat as much as you can before munching yourself into a corner!
@@ -111,6 +113,7 @@ List of projects that provide terminal user interfaces
 - [gomuks](https://github.com/tulir/gomuks) Matrix client
 - [gord](https://github.com/yellowsink/gord) TUI discord client. updated fork of the now-outdated cordless.
 - [matterhorn](https://github.com/matterhorn-chat/matterhorn) A Mattermost terminal client.
+- [mcabber](https://mcabber.com/) - XMPP (Jabber) client
 - [Mutt](https://gitlab.com/muttmua/mutt) Email client
 - [sclack](https://github.com/haskellcamargo/sclack) Slack terminal client
 - [scli](https://github.com/isamert/scli/) A simple terminal user interface for signal messenger
@@ -195,6 +198,7 @@ List of projects that provide terminal user interfaces
 - [w3m](https://github.com/tats/w3m) A text-mode WWW browser
 
 ---
+
 There's a crazy amount of TUI projects out there, and we can't list them all (though we try!)  
 For more, see awesome-opensource's [TUI Projects](https://awesomeopensource.com/projects/tui) page.