logo update in README.md

[nagulvali]

Description

• Converted Logo 2.ai to Logo2.png extension. And added png file to assets/raw/logo/Logo2.png
• Updated README.md file with logo assets/logo/Logo2.png

Fixes #73

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own 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
• I have added tests that prove my fix is effective or that my feature works
• Any dependent changes have been merged and published in downstream modules
• I have added all the three reviewers: @vinitshahdeo, @Kashish121 & @ishika1727