Hibernate from E17 on Arch linux

Earlier this year, I had posted about modifying {install_folder}/etc/enlightenment/sysactions.conf to obtain "Sleep" feature from Enlightenment on Arch linux. I did not mention about hibernation because I had not got it to work. Hibernation can be enabled likewise modifying sysactions.conf to replace
action:   hibernate /etc/acpi/hibernate.sh force
by
action:   hibernate /usr/sbin/pm-hibernate
However, to enable hibernation I had to add "resume" to HOOKS variable defined in /etc/mkinitcpio.conf and add resume=/path/to/swap to my kernel line in /boot/grub/menu.lst.