chore: update .gitignore to ignore virtual environment folder

[ChiragAgg5k]

Closes: #83

• Title : update .gitignore to ignore virtual environment folder
• Name: Chirag Aggarwal
• Idenitfy yourself: SSOC contributor

Describe the add-ons or changes you've made 📃

updated .gitignore to ignore virtual environment folder

Type of change ☑️

What sort of change have you made:

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, local variables)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist: ☑️

• My code follows the Contributing Guidelines & Code of Conduct of this project.
• This PR does not contain plagiarized content.
• I have performed a self-review of my own code.
• I have commented my code, particularly wherever it was hard to understand.
• My changes generate no new warnings.

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[Avdhesh-Varshney]

@ChiragAgg5k don't update the gitignore. But update the readme file.

[ChiragAgg5k]

Changed .gitignore back to original and updated readme. Please consider squash merge. Thanks