Add README.md

README.md

+This project will help you to understand the various options available to perform CRUD opertaions with Spring Data JPA.
+It's a Spring Boot project where in-memory H2 database has been used.
+
+You can learn the below things -
+1. Query Methods
+2. Parmeterized Query Methods
+3. Async Query Methods
+4. Position Based Query Method
+5. Named Query Params
+6. Custom Sort Method
+7. Update Query Method
+8. Delete Query Method
+9. Named Query Method
+10. Pagination
+11. Sorting
+12. Sorting with Pagination
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