new command to print both the IPv4 and IPv6 address on their own line

I'm not 100% sure if you can add multiple IP addresses to one domain on
a single line, so I just broke it up into two.  It makes the file
bigger and longer, but I'll have to see how it works

gravity.sh

@@ -137,7 +137,7 @@ function gravity_advanced()
 	echo "** $numberOf unique domains trapped in the event horizon."
 	# Format domain list as "192.168.x.x domain.com"
 	echo "** Formatting domains into a HOSTS file..."
-	cat $origin/$eventHorizon | awk '{sub(/\r$/,""); print "'"$piholeIP"'" $0}' > $origin/$accretionDisc
+	cat $origin/$eventHorizon | awk '{sub(/\r$/,""); print "'"$piholeIPv4 "'" $0"\n""'"$piholeIPv6 "'" $0}'
 	# Copy the file over as /etc/pihole/gravity.list so dnsmasq can use it
 	sudo cp $origin/$accretionDisc $adList
 	kill -HUP $(pidof dnsmasq)