Add d/gbp.conf
diff --git a/debian/gbp.conf b/debian/gbp.conf
new file mode 100644
index 0000000..b9eb5b0
--- /dev/null
+++ b/debian/gbp.conf
@@ -0,0 +1,4 @@
+[DEFAULT]
+upstream-branch = master
+debian-branch = debian/xenial
+upstream-tag = %(version)s