Add example weekly cron script

cron/renew-ssl-weekly.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+
+# Type of auth method you want to use - overrides any stored auth methods
+# in the account.  If you don't want to override them, set
+# AUTHMETHOD=""
+AUTHMETHOD="-a webroot --webroot-path /var/www/letsencrypt-root/"
+
+/usr/src/letsencrypt/letsencrypt-auto \
+        --server https://acme-v01.api.letsencrypt.org/directory \
+        --agree-tos \
+        ${AUTHMETHOD} \
+        -n \
+        renew
+ 
+ # Put other commands you need to run below here
+ # like restarting apache, copying cert files, etc.
+/etc/init.d/apache2 restart &>/dev/null