Add README.md

README.md

+A Messaging System is responsible for transferring data from one application to another, so
+the applications can focus on data.Distributed messaging is based on the concept of reliable message queuing.
+Messages are queued asynchronously
+between client applications and messaging system. Two types of messaging patterns are
+available – one is point to point and the other is publish-subscribe (pub-sub) messaging
+system. Most of the messaging patterns follow pub-sub.
+
+producer is an application that sends messages It does not send messages directly 
+to the recipient. It sends messages only to the kafka server to particular topic.
+
+Consumer is an application that reads message from particulat topic from the kafka server.
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