Update 'README.md'

README.md

@@ -1,6 +1,13 @@
-# bitwarden Backup
-This project uses the https://github.com/vwxyzjn/portwarden project along with gpg, sdelete, and bw cli.
+# Bitwarden Backup
+This project uses bw cli, gpg, and sdelete.  It will export the vault and any organizations to both json and csv files. It also downloads all attachments into folders.  You can zip the export together or gpg encrypt the export as well, the encryption is symmetric and uses your bitwarden vault password.
 
-The script adds the directory to the path and then runs asking for the username, master password, and if used the TOTP.
+# Usage
+```
+Usage:
+    bitwardenBackup.ps1 [-zip] [-encrypt] [-verbose]
 
-It will create the portwarden file and decrypted zip file in the temp directory. It will create an encrypted gpg file (asking for a password) of the decrypted zip file and then wipe the temporary files
+Options:
+    -zip            Zips the export/attachements into a zip
+    -encrypt        Encrypts the zip file with gpg symmetric encryption using your vault password
+    -verbose        Show verbose information
+```