Update readme file with source code information

[urmil22]

Title: docs: Update README to Point to facebook/flow Repository

Description:

This pull request addresses issue #120 by updating the README file to include a reference to the facebook/flow repository. This change clarifies that the flow-bin repository provides binary releases for Flow, while the source code is maintained in the facebook/flow repository.

Changes Made:

Added a new section in the README file to guide users to the source code repository.

Motivation and Context:

The flow-bin repository only contains binary releases, whereas the actual source code is hosted in the facebook/flow repository. This update ensures that users are directed to the correct repository for source code, contributing, and additional documentation.

Related Issue:

Fixes #120

Types of Changes:

Documentation update

[facebook-github-bot]

Hi @urmil22!

Thank you for your pull request and welcome to our community.

Action Required

In order to merge any pull request (code, docs, etc.), we require contributors to sign our Contributor License Agreement, and we don't seem to have one on file for you.

Process

In order for us to review and merge your suggested changes, please sign at https://code.facebook.com/cla. If you are contributing on behalf of someone else (eg your employer), the individual CLA may not be sufficient and your employer may need to sign the corporate CLA.

Once the CLA is signed, our tooling will perform checks and validations. Afterwards, the pull request will be tagged with CLA signed. The tagging process may take up to 1 hour after signing. Please give it that time before contacting us about it.

If you have received this in error or have any questions, please contact us at [email protected]. Thanks!

[facebook-github-bot]

Thank you for signing our Contributor License Agreement. We can now accept your code for this (and any) Meta Open Source project. Thanks!