README: Also describe how to use zbarcam

I find this one of the most common use cases.

1 files changed, 7 insertions, 1 deletions

diff --git a/README.md b/README.md
index 4832af9..2d28491 100644
--- a/README.md
+++ b/README.md
@@ -61,12 +61,18 @@ Pipe an `otpauth://` URI into a passfile:
 $ pass otp insert totp-secret < totp-secret.txt
 ```
 
-Use [zbar](http://zbar.sourceforge.net/) to decode a QR image into a passfile:
+Use [zbar](http://zbar.sourceforge.net/) to decode a QR image or webcam shot into a passfile:
 
 ```
 $ zbarimg -q --raw qrcode.png | pass otp insert totp-secret
 ```
 
+To use your webcam:
+
+```
+$ zbarcam -q --raw | pass otp insert totp-secret
+```
+
 The same, but appending to an existing passfile:
 
 ```