Add Micro Tetris (#174)

Micro Tetris is one of the smallest Tetris implementations in the world,
utilizing only ANSI escape sequences to draw the board.

README.md

@@ -121,6 +121,7 @@ List of projects that provide terminal user interfaces
 - [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!
+- [Micro Tetris](https://github.com/troglobit/tetris) One of the smallest Tetris implementations in the world, utilizing only ANSI escape sequences to draw the board.
 - [moon-buggy](https://github.com/seehuhn/moon-buggy) Drive some car across the moon
 - [MyMan](https://sourceforge.net/projects/myman/) MyMan is a video game for color and monochrome text terminals in the genre of Namco's Pac-Man
 - [nchess](https://github.com/billyvinning/nchess) Chess in the terminal, written in C.