Added Badges

[jigar-sable]

ISSUE #60

fixes #60

Describe the changes you've made

Added Shields Badges for Issue count, Star count, Fork count, Slack channel link and all.

Describe if there is any unusual behaviour of your code(Write NA if there isn't)

NA

Additional context (OPTIONAL)

Test plan (OPTIONAL)

Checklist

• [ ] I have added my name in the contributors list at the end of README.md file.
• [ ] My code follows the code style of this project.
• [x] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [ ] I have added tests to cover my changes.
• [x] All new and existing tests passed.
• [x] The title of my pull request is a short description of the requested changes.
• [x] LGM-SOC'21