Create user script update: allow no password, allow different password length

Readme.md

@@ -26,6 +26,31 @@ Inside the base folder there are
 - ssh-keygen for temporary holding the PEM/PUB files
 - zip file which holds the created user list, password and PEM/PUB files
 
+## Config
+
+### create_user.sh: create_user.cfg
+
+A `create_user.cfg` can be created to set a differen HOME_LOCATION and PASSWORD_LENGTH values
+
+eg:
+
+```ini
+HOME_LOCATION="/storage"
+PASSWORD_LENGTH=14
+```
+
+### authorized_key_location_change.sh: authorized_key_location_change.ignore
+
+For this script a `authorized_key_location_change.ignore` with a list of user names to ignore for the
+move
+
+eg:
+
+```ini
+foo_user
+bar_user
+```
+
 ## Options
 
 ### -g (go)