update LE agreement

bin/v-add-letsencrypt-user

@@ -41,7 +41,7 @@ fi
 #----------------------------------------------------------#
 
 api='https://acme-v01.api.letsencrypt.org'
-agreement='https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf'
+agreement='https://letsencrypt.org/documents/LE-SA-v1.1.1-August-1-2016.pdf'
 if [ -z "$email" ]; then
     email=$(get_user_value '$CONTACT')
 fi