[gtkmm-documentation] .gitignore: Update after port to yelp-tools

[Kjell Ahlstedt <kjellahl src gnome org>]

commit 5733b8a56fd8535299ce30e66425dd32ef6d3556
Author: Kjell Ahlstedt <kjell ahlstedt bredband net>
Date:   Sun Apr 6 16:39:07 2014 +0200

    .gitignore: Update after port to yelp-tools

 .gitignore |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 6262d1f..3441c70 100644
--- a/.gitignore
+++ b/.gitignore
@@ -13,6 +13,7 @@ stamp-h?
 /configure.lineno
 /docs/FAQ/html/
 /docs/tutorial/html/
-/docs/tutorial/*/gtkmm-tutorial.xml
-/docs/tutorial/*/*.[mp]o
+/docs/tutorial/*/index.docbook
+/docs/tutorial/*/*.mo
+/docs/tutorial/*/*.stamp
 /gtkmm-documentation-*.tar.*