Update Readme

Author: obalunenko

.assets/demo.png

@@ -5,3 +5,14 @@
 My solutions of puzzles for [Advent Of Code](https://adventofcode.com/)
 
 This repository contains solutions for puzzles and cli tool to run solutions to get answers for input on site.
+
+## Usage of aoc-cli
+
+Download binary from [![Latest release artifacts](https://img.shields.io/badge/artifacts-download-blue.svg)](https://github.com/oleg-balunenko/advent-of-code/releases/latest)
+and execute
+
+Run it and follow instructions
+
+### Demo
+
+![cli demo](./.assets/demo.png)