[gnome-builder] build: update gitignore

[Christian Hergert <chergert src gnome org>]

commit 7368f59429f13d5d078ae3a9589c3d970f9cdc86
Author: Christian Hergert <chergert redhat com>
Date:   Tue Jan 19 13:48:18 2016 -0800

    build: update gitignore

 build/Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/build/Makefile.am b/build/Makefile.am
index 5b499e8..8563f62 100644
--- a/build/Makefile.am
+++ b/build/Makefile.am
@@ -10,6 +10,7 @@ GITIGNOREFILES = \
        missing \
        py-compile \
        test-driver \
+       ylwrap \
        $(NULL)
 
 -include $(top_srcdir)/git.mk