mvn clean install
cd target
java -jar challenge-jar-with-dependencies.jar
http://localhost:8080/add-message?user=[user_name]&message=[new message content]
Remarks: if user doesn't exists then above line will add new user
http://localhost:8080/show-messages?user=[user_name]
http://localhost:8080/show-messages?user=[user_name]&reverse-order
http://localhost:8080/add-follow-user?user=[user_name]&follow-user=[follow_user_name]
Remarks: users must exists
http://localhost:8080/show-follow-users-messages?user=[user_name]
http://localhost:8080/show-follow-users-messages?user=[user_name]&reverse-order