added post install hook

# Please enter the commit message for your changes. Lines starting
# with '#' will be ignored, and an empty message aborts the commit.
# On branch t9
# Changes to be committed:
#   (use "git reset HEAD <file>..." to unstage)
#
#	new file:   debian/postinst
#
# Untracked files:
#   (use "git add <file>..." to include in what will be committed)
#
#	debian/debhelper.log
#	debian/k9call.debhelper.log
#	debian/k9call.tarlist
#	debian/tmp.tarlist
#	k9call.pro
