Added venv to gitignore and changed install command for different CLI

[ZhiYingSun]

Motivation and Context

It is easier to manage the dependencies of python projects using a virtual environment and we should add support for it in the gitignore file.

When installing dependencies using macOS, the command did not work on zsh and it took time to figure out the issue. I propose a new command that should work for bash, zsh, Command shell, and PowerShell. This should work for most operating systems.

Your Changes

Description:

• added venv to gitignore
• changed install command for different CLI

Type of change (select all that apply):

• Refactoring (internal change to codebase, without changing functionality)
• Documentation update (change that modifies or updates documentation only)

Testing

Tested the command on zsh and this discussion tested it for other CLIs.

Questions and Comments (if applicable)

Checklist

• I have performed a self-review of my own code.

[david-yz-liu]

Thanks @ZhiYingSun!