[dak/master] make-changelog. document --archive option

[Luca Falavigna <dktrkranz@debian.org>]

---
 dak/make_changelog.py |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/dak/make_changelog.py b/dak/make_changelog.py
index e0d1710..9246b40 100755
--- a/dak/make_changelog.py
+++ b/dak/make_changelog.py
@@ -67,7 +67,7 @@ def usage (exit_code=0):
 
        Usage:
        make-changelog -s <suite> -b <base_suite> [OPTION]...
-       make-changelog -e
+       make-changelog -e -a <archive>
 
 Options:
 
@@ -76,7 +76,8 @@ Options:
   -b, --base-suite          suite to be taken as reference for comparison
   -n, --binnmu              display binNMUs uploads instead of source ones
 
-  -e, --export              export interesting files from source packages"""
+  -e, --export              export interesting files from source packages
+  -a, --archive             archive to fetch data from"""
 
     sys.exit(exit_code)
 
-- 
1.7.2.5