docs(readme): add venv and update pypi source

[nsuruguay05]

Description

Added venv information to README installation steps, and updated both README and getting started with the correct pypi library name.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation update
• Refactoring (no functional changes)

Related Issues

No issue

Changes Made

• Added venv info to README
• Updated pypi library name in getting started

Testing Done

• Unit tests pass locally
• Added new tests for new functionality
• Tested manually

Checklist

• My code follows the project's style guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• New and existing unit tests pass locally with my changes