Update README.md

Author: hogimn

spring-amqp/README.md

@@ -51,6 +51,32 @@ java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=work-queues,sen
 
 For tutorial 6, run the server followed by the client.
 
+You can find more usage instructions by running the following command:
+
+```
+java -jar target/rabbitmq-tutorials.jar
+```
+
+This will display the following message:
+
+```
+This app uses Spring Profiles to control its behavior.
+
+Options are:
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=hello-world,receiver
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=hello-world,sender
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=work-queues,receiver
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=work-queues,sender
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=pub-sub,receiver
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=pub-sub,sender
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=routing,receiver
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=routing,sender
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=topics,receiver
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=topics,sender
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=rpc,client
+java -jar target/rabbitmq-tutorials.jar --spring.profiles.active=rpc,server
+```
+
 ## Configuration
 
 When running receivers/servers it's useful to set the duration the app runs to a longer time.  Do this by setting