docs: Initial readme update

What:

• Updated instructions in readme.md file
• Dev Envinroment setup (with venv)
• pip-tools setup instructions
• Add pyenv version 3.7.8
• Test works on Linux and Mac
• TODO project list in the README
• Argcomplete autocompletion

Why: Lets us install ansible, pip-tools

Co-authored-by: Ben Davis bengineerdavis@gmail.com