Add slides (#235)

Slides is a terminal-based presentation tool. It allows you to create
a simple markdown file that contains your slides. Additionally, it is
accessible over SSH if hosted on a machine.

README.md

@@ -389,6 +389,7 @@ List of projects that provide terminal user interfaces
 - [procmux](https://github.com/napisani/procmux) - a TUI for running multiple commands in parallel in easily switchable terminals
 - [productivity-timer](https://github.com/h-sifat/productivity-timer) A command line time tracker application with a sleek TUI.
 - [sc-im](https://github.com/andmarti1424/sc-im) An ncurses spreadsheet program for terminal. Reignited version of sc
+- [slides](https://github.com/maaslalani/slides) A terminal based presentation tool, supporting markdown syntax.
 - [taskline](https://github.com/perryrh0dan/taskline) Tasks, boards & notes for the command-line habitat
 - [taskwarrior-tui](https://github.com/kdheepak/taskwarrior-tui) A Terminal User Interface for Taskwarrior
 - [tenere](https://github.com/pythops/tenere) A TUI for ChatGPT written in Rust.