Updated ReadMe with performance comparison graph

Updated the ReadMe with a performance comparison graph

Author: DeBukkIt

README.md

@@ -1,10 +1,18 @@
 ### SimpleServerClient ###
-Offers very simple and easy-to-use Java classes for Client-Server-Client or just Server-Client applications doing all the work for connection setup, reconnection, timeout, keep-alive, etc. in the background.
+A very lightweight and easy-to-use library for client-server-client or simply server-client applications in Java doing all the work for you: connection setup, reconnection, timeout, keep-alive etc. in the background. Simply tell the application what to send and receive, and the rest will happen by itself. That's almost magic!
 
 **Code Quality**
 
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/3d5b115186f44ecab613ac3f2ca0015b)](https://www.codacy.com/app/DeBukkIt/SimpleServerClient?utm_source=github.com&utm_medium=referral&utm_content=DeBukkIt/SimpleServerClient&utm_campaign=Badge_Grade)
 
+# Performance Comparison
+
+The graph shows a comparison of the latencies achieved with different versions of the SimpleServerClient. Recently, buffers were introduced for both branches (master and experimental), each generating a significant increase in performance. In addition, the version in the experimental branch does not reestablish a new connection to the server for each message from the client, but always uses the same connection where messages are exchanged in both directions. The elimination of this overhead offers another significant increase in performance. This implementation will be merged into the master branch as soon as it is ready to use and stable.
+
+![Performance Comparison of Versions and Branches](https://debukkit.github.io/images/SimpleServerClient_Performance_Comparison.jpg)
+
+The latency in the graph shows the travel time of an about 25-byte small Datapackage sent by the client through the Internet to the server and back (sum of ping and pong).
+
 # How to use THE SERVER
 ```java
 import java.net.Socket;