Restructured to better break up backups and add user control

Makefile

@@ -23,11 +23,12 @@ server: keys scripts user ./aether-gen.bash ./aether.pub ./server-backup
 	bash ./aether-gen.bash
 	cp ./aether.pub /home/aether/.ssh/authorized_keys
 	cp ./aether-gen.bash /root/bin/aether-gen.bash
-	mkdir /usr/local/etc/Aether
+	mkdir -p /usr/local/etc/Aether/backup-entries
 	touch /usr/local/etc/Aether/nodeslist
 	mkdir -p ${BACKUPDIR};  
 	make checkperm
 	@echo You have the files. Add aether-gen.bash and server-backup to root\'s crontab.
+	@echo Mark services to be backed up by adding a file from examples/ to /usr/local/etc/Aether/backup-entries
 	@echo Track client nodes in /usr/local/etc/Aether/nodeslist
 
 user: aether make-user.bash