Improve documentation on using badges in README

[himabindu-1614]

I was going through the README and noticed that the “Badges” section is mentioned, but I found it a bit unclear on how to actually use them.

It would be super helpful if the docs could explain:

• Which badge services are commonly used
• Examples of badges with Markdown syntax
• Any guidelines for placement or sizing

Right now, the section just briefly mentions badges without showing how to add them, so newcomers might be a bit lost.

It’d be great if a small subsection could be added with example code snippets and some best practices for including badges in a README. Thanks!

[RichardLitt]

This sounds right to me.

PRs accepted.