Added Basics\Fibonacci.java & also edited the README.md accordingly

[nunia]

Description

Related Issue

This PR closes #

Motivation and Context

Screenshots (if any)

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code follows the code style of this project.
• [ ] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.

[SVijayB]

Hey @Nunia thanks for contributing to open source! Your pull request has been merged 👍

[nunia]

Hey @Nunia thanks for contributing to open source! Your pull request has been merged 👍

Thankyou @SVijayB , there are two more contributions that were done by me. Please check once if they are mergeable.

[SVijayB]

@Nunia I will look into it! Thanks.