Update README

README.md

@@ -8,6 +8,7 @@ Qutebrowser userscript to fill 1password credentials
 
 - [The 1Password CLI](https://support.1password.com/command-line-getting-started/)
   Ensure you have it installed and set up. Follow the official documentation.
+  Note that only 1Password CLI 2 is supported.
 - [rofi](https://github.com/davatorium/rofi) to ask for password and list items
 
 ## How it works
@@ -34,20 +35,25 @@ Flags:
 - `--auto-submit` Will send a carriage return once the last character is sent, hopefully submitting the form.
 - `--cache-session` Caches the session for 30 minutes to prevent asking for the password again in that interval.
 - `--allow-insecure-sites` Allow filling in insecure (non-https) sites
+- `--biometric` Use biometric or PAM authentication instead of asking for the master password
+
+Using the biometric flag requires installing the 1Password Desktop app and enabling "Biometric unlock" in it's Developer options.
 
 ```
 $ python qute_1pass.py --help
-usage: qute_1pass.py [-h] [--auto-submit] [--cache-session] [--allow-insecure-sites] command
+usage: qute_1pass.py [-h] [--auto-submit] [--cache-session] [--allow-insecure-sites] [--cache] [--biometric] command
 
 positional arguments:
   command               fill_credentials, fill_totp, fill_username, fill_password
 
-optional arguments:
+options:
   -h, --help            show this help message and exit
   --auto-submit         Auto submit after filling
   --cache-session       Cache 1password session for 30 minutes
   --allow-insecure-sites
                         Allow filling credentials on insecure sites
+  --cache               store and use cached information
+  --biometric           Use biometric unlock - don't ask for password
 ```
 
 Call your script from qutebrowser using