[seahorse] Add a basic .gitignore that includes build/

[Niels De Graef <nielsdg src gnome org>]

commit 2e5b4780c47934a6c3a1e75b72467a6d2b98766c
Author: Niels De Graef <nielsdegraef gmail com>
Date:   Sat Jan 27 15:51:23 2018 +0100

    Add a basic .gitignore that includes build/

 .gitignore |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..378eac2
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+build