Actually, you don't need to install lirc manually. It'll be done after you add appropriate remote on the media director page. As Zaerc suggested, choose your remote from the list or add a new one. It's easy to do. Just add a new device template, add there a new option - 'Configuration' and copy there lircd.conf content. After router will be reloaded LIRC package will be installed, /etc/lircd.conf will be created from your device template (option 'Configuration'). Also you will see the log in the /var/log/pluto - <dev_ID>_LIRC.log