Ignore domains in ad lists that do not contain `.` characters.

This will skip entries such as `localhost`, `android`, `debian` and
empty lines as listed in #35.

gravity.sh

@@ -70,7 +70,7 @@ do
 		# This helps with that and makes it easier to read
 		# It also helps with debugging so each stage of the script can be researched more in depth
 		echo "$data" | awk 'NF {if ($1 !~ "#") { if (NF>1) {print $2} else {print $1}}}' | \
-			sed -e 's/^[. \t]*//' -e 's/\.\.\+/./g' -e 's/[. \t]*$//' > $saveLocation
+			sed -e 's/^[. \t]*//' -e 's/\.\.\+/./g' -e 's/[. \t]*$//' | grep "\." > $saveLocation
 		echo "Done."
 	else
 		echo "Skipping list because it does not have any new entries."