clarified -c and -d flags in the help prompt

l2ork_addons/tar_em_up.sh

@@ -10,8 +10,8 @@ then
 	echo "     -a    l2ork addon to the dev package"
 	echo "     -b    build a deb (incremental, all platforms)"
 	echo "     -B    build a deb (complete recompile)"
-	echo "     -c    core Pd"
-	echo "     -d    whole dev folder"
+	echo "     -c    core Pd source tarball"
+	echo "     -d    whole dev folder tarball"
 	echo "     -e    everything"
 	echo "     -f    full installer (incremental)"
 	echo "     -F    full installer (complete recompile)"