Give more concrete instructions.

README-zope.md

@@ -8,8 +8,27 @@ login zope_username
 password zope_password
 ```
 
+You need to prepare config file like :
+```text
+#For production
+#CA="https://acme-v01.api.letsencrypt.org/directory"
+#Use the latest license.
+#LICENSE="https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf"
+#For staging. Remove it for production.
+CA="https://acme-staging.api.letsencrypt.org/directory"
+#Use your convenient location.
+WELLKNOWN="/home/yusei/letsencrypt.sh"
+#This is needed to call hook
+HOOK_CHAIN=yes
+```
+
+You also need domains.txt like :
+```text
+www.nexedi.co.jp
+```
+
 Now you can invoke the script like :
 
 ```text
-./letsencrypt.sh [command [argument]] [parameter [argument]] [parameter [argument]] --hook ./zope-hook.sh
+./letsencrypt.sh -c --hook ./zope-hook.sh
 ```

[Kazuhiko Shiozaki]

Why do you think it is required ?

Here is the explanation in doc/examples/config :

# Chain clean_challenge|deploy_challenge arguments together into one hook call per certificate (default: no)

[Yusei Tahara]

If you talk about HOOK_CHAIN=yes, letsencrypt.sh did not call zope-hook.sh without that option to me...