Corrected shutdown message

src/main/java/envoy/server/Startup.java

@@ -45,7 +45,7 @@ public class Startup {
 		server.start();
 		server.getSocketProcessor().registerSocketIdListener(ConnectionManager.getInstance());
 
-		System.out.println("Press any key to stop the server...");
+		System.out.println("Press the return key to stop the server...");
 		System.in.read();
 		System.exit(0);
 	}