Add note about having to run make to README.Ansible

Signed-off-by: martin f. krafft <madduck@madduck.net>
diff --git a/README.Ansible b/README.Ansible
index 63cd284..f671b79 100644
--- a/README.Ansible
+++ b/README.Ansible
@@ -20,6 +20,9 @@
 
 /…/reclass refers to the location of your reclass checkout.
 
+  0. Run 'make' in the root of the reclass checkout (see the section
+     'Installation' in the README file for the reason).
+
   1. Symlink /…/reclass/adapters/ansible to /etc/ansible/hosts (or
      ./hacking/hosts)