add launchctl support
we don't really need the temp files
set environment variable for intercom
Merge branch 'master' of https://github.com/boourns/intercom into launchd

Conflicts:
	intercom.sh
bad copy pasta
log to background
Because say isn't enough, post to notification center
fix save to iTunes
Merge with orenmazor/launchd
Merge pull request #5 from j-mutter/notifications

Because say isn't enough, post to notification center