Update 'README.md'

README.md

@@ -5,6 +5,8 @@ These scripts are called usually with cron with something like the following
 0 0 * * * /root/duplicacy.sh
 ```
 
+### Filter file contents
+
 #### GauntBitwarden
 ```
 FOLDERS_TO_BACKUP=("/opt/bitwarden")
@@ -12,7 +14,9 @@ FOLDERS_TO_BACKUP=("/opt/bitwarden")
 
 #### GauntNAS
 ```
-FOLDERS_TO_BACKUP=("/etc" "/data" "/root")
+i:etc/.*
+i:data/.*
+i:root/.*
 ```
 
 #### GauntPlex