Add project background in the readme

[sudiptob2]

Update the readme documentation to provide a holistic background and the motivation behind this project to future users and contributors.

[scopophobic]

hi, I am interested in contributing... so what exactly are you looking for!?

[Ria-R]

Can I be assigned to contribute in this issue?

[sudiptob2]

@Ria-R
If you want to contribute, please open a PR with your changes. Once your changes are good enough, it will be accepted by the maintainers.