added clean and distclean targets

diff --git a/Makefile b/Makefile
index c5744d5..69370d7 100755 (executable)
--- a/Makefile
+++ b/Makefile
@@ -114,3 +114,8 @@ uninstall:
        @echo '  psql -c "DROP TABLE mod_roomreservation_bookings;"'\r
        @echo After that, all bookings are unrecoverably deleted!\r
        @echo\r
+\r
+# clean up\r
+clean: distclean\r
+distclean:\r
+       $(RM) doc/source\r