add some badges with links

[Umesh-01]

This fixes #46

Are you a part of LGM SOC' 21 ❓

• [x] Yes ✔️
• [ ] No ✖️

Describe the changes you've made 🏆

added some badges and also the links related to them to the README.md file, now after clicking on them the user can be redirected to the related section/web page.

Type of change 🖇️

• [ ] Bug fixing (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Code style update (formatting, local variables)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [x] This change requires a documentation update

Checklist: 📋

• [x] My code follows the style guidelines of this project.
• [x] I have performed a self-review of my own code.
• [x] I have commented my code, particularly in hard-to-understand areas.
• [x] I have made corresponding changes to the documentation.
• [x] My changes generate no new warnings.
• [x] I have added tests that prove my fix is effective or that my feature works.
• [x] New and existing unit tests pass locally with my changes.
• [x] Any dependent changes have been merged and published in downstream modules.

Screenshots (if required) 📷

Before

After

[Umesh-01]

@yashsehgal @kanak22 check this out...