bumped version to 2.1.3

Merge branch 'main' of github.com:Kaya-Sem/commandtrein

command updates!

update version

Update README.md

readme update

Merge branch 'main' of github.com:Kaya-Sem/commandtrein

updates

Merge branch 'main' of github.com:Kaya-Sem/commandtrein

Update README.md

Bash tab completion (#25)

* Create bash_completion.sh

* Update README.md with completion info

* Update README.md, fixed typos

Update README.md