[office-runner] build: Add .gitignore

[Bastien Nocera <hadess src gnome org>]

commit 81a1c43e1a0d6b9722063e6a01bc4c2100aa58e5
Author: Bastien Nocera <hadess hadess net>
Date:   Tue May 16 12:38:53 2017 +0200

    build: Add .gitignore

 .gitignore |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..f6f7505
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+Makefile.in
+*~