Update README.md

Update README.md

h2 sub project added, readme updated, log4j2 config updated

lombok and log4j2 implemented, refactoring and readme updated

redis example user not found problem fixed and readme updated

redis example endpoints, service and repositories refactoring

redis project updated, sub projects refactoring, swagger implemented and readme updated

spring data for redis feature added

Project converted multi gradle project

install cassandra description updated

first commit

Initial commit