[mutter] Update .gitignore

[Jasper St. Pierre <jstpierre src gnome org>]

commit 0a0bcf65ad4ef566d9bf0b5c32f359f93abb46a0
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Fri Aug 23 18:23:01 2013 -0400

    Update .gitignore

 .gitignore |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
index 6649905..ec57c27 100644
--- a/.gitignore
+++ b/.gitignore
@@ -75,6 +75,7 @@ src/stamp-mutter-enum-types.h
 src/mutter-marshal.[ch]
 src/stamp-mutter-marshal.h
 src/meta-dbus-xrandr.[ch]
+src/meta-dbus-idle-monitor.[ch]
 src/mutter-plugins.pc
 doc/reference/*.args
 doc/reference/*.bak