Install sample hooks

A template mechanism to populate newly initialized repository
with default set of files is introduced.  Use it to ship example
hooks that can be used for update and post update checks, as
Josef Weidendorfer suggests.

Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/templates/hooks--post-update b/templates/hooks--post-update
new file mode 100644
index 0000000..bcba893
--- /dev/null
+++ b/templates/hooks--post-update
@@ -0,0 +1,8 @@
+#!/bin/sh
+#
+# An example hook script to prepare a packed repository for use over
+# dumb transports.
+#
+# To enable this hook, make this file executable by "chmod +x post-update".
+
+exec git-update-server-info