Fix demo

Author: ralscha

build_all.bat

@@ -40,4 +40,5 @@ call ..\mvnw.cmd clean package
 cd ..\worldchat
 call ..\mvnw.cmd clean package
 
-cd ..
+cd ..
+pause

datachannel/src/main/java/ch/rasc/wamp2spring/demo/Application.java

@@ -4,10 +4,10 @@
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.web.socket.config.annotation.WebSocketHandlerRegistration;
 
-import ch.rasc.wamp2spring.servlet.WampServletConfigurer;
+import ch.rasc.wamp2spring.servlet.WampServletConfiguration;
 
 @SpringBootApplication
-public class Application implements WampServletConfigurer {
+public class Application extends WampServletConfiguration {
 
 	public static void main(String[] args) {
 		SpringApplication.run(Application.class, args);