update README.md

Запрос на слияние 'tw123' (#1) из tw123 в master

upload README

upload files

create demo/example_solution.txt

update dev/solution.cs

upload README

upload files

create demo/example_solution.txt

update dev/solution.cs

create dev/data/benchmark_mazes.csv

create dev/solution.cs

create spec/codex.md

delete scripts/PANDAS_CHEATSHEET.md

delete scripts/MATPLOTLIB_CHEATSHEET.md