Updated README.md for branch logging

README.md

@@ -33,3 +33,9 @@ http://localhost:8080/h2-console.
  In this branch, the CommandLineRunner bean creates sample data using the service classes.
  After startup, connect to the h2 database using the h2-console web application: http://localhost:8080/h2-console.
  Check the data by executing some queries with the help of the console.
+
+* branch logging
+
+  Look at the different levels of log messages (debug, trace, info etc.).
+  The level for the execution of the application is set in file application.properties. Change
+  the setting to see effect on the log messages after restarting the application.