launchd script as a starting point for a demonization effort. Edit and place in ~/Library/LaunchAgents

org.gnu.emacsd.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
	<key>KeepAlive</key>
	<false/>
	<key>Label</key>
	<string>org.gnu.emacsd</string>
	<key>ProgramArguments</key>
	<array>
		<string>/opt/boxen/homebrew/Cellar/emacs/24.3-boxen1/Emacs.app/Contents/MacOS/Emacs</string>
		<string>--daemon</string>
		<string>--no-site-file</string>
		<string>--reverse-video</string>
	</array>
	<key>RunAtLoad</key>
	<true/>
	<key>WorkingDirectory</key>
	<string>/Users/gary/</string>
</dict>
</plist>