update README file

[ahmedmed7t]

Guidelines

Describe the big picture of your changes here to communicate to the maintainers why we should accept this pull request. If it fixes a bug or resolves a feature request, be sure to link to that issue.

Types of changes

What types of changes does your code introduce?

• [ ] Bugfix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Preparing a pull request for review

Ensure your change is properly formatted by running:

$ ./gradlew spotlessApply

Please correct any failures before requesting a review.