Improve doc

[ritesh-singh]

Thanks for the great plugin!

While going through the ReadMe, i felt few terms were confusing

• Inconsistent wording of modules/projects (both are same in gradle multi-module)
• Changed Projects: For example, Changed Projects may be a good options when initially sending a Pull Requests
  • I am unsure, how it could be used for PR, changes must be in one module, but affecting other module which has test in it.

Would be great to have same wording around gradle modules/projects and use-cases around Changed Projects and Dependent Projects with DAG as an example.

Thank you!