[library-web] Fix parsing --skip-extra-tarballs option

[William Jon McCann <mccann src gnome org>]

commit d4fb1f11b298a1b71a4c5c57519e8116ad9dd2b5
Author: William Jon McCann <william jon mccann gmail com>
Date:   Tue Feb 18 13:30:11 2014 -0500

    Fix parsing --skip-extra-tarballs option

 src/app.py |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/app.py b/src/app.py
index b481636..b8ed218 100644
--- a/src/app.py
+++ b/src/app.py
@@ -66,7 +66,7 @@ class App:
         parser.add_option('--rebuild-language', dest = 'rebuild_language',
             help = 'rebuild all documents in LANGUAGE', metavar = 'LANGUAGE')
         parser.add_option('--skip-extra-tarballs',
-            action = 'store_false', dest = 'skip_extra_tarballs',
+            action = 'store_true', dest = 'skip_extra_tarballs',
             help = "don't look for documentation extra tarballs")
         parser.add_option('--rebuild-remote-documents',
             action = 'store_true', dest = 'rebuild_remote',