Update 'pkcs15-tools.md'

pkcs15-tools.md

@@ -3,6 +3,30 @@ $ pkcs15-tool --list-applications
 Using reader with a card: Yubico YubiKey OTP+FIDO+CCID
 ```
 
+```shell
+$ pkcs15-tool --list-pins
+Using reader with a card: Yubico YubiKey OTP+FIDO+CCID
+PIN [PIN]
+	Object Flags   : [0x01], private
+	Auth ID        : 02
+	ID             : 01
+	Flags          : [0x32], local, initialized, needs-padding
+	Length         : min_len:4, max_len:8, stored_len:8
+	Pad char       : 0xFF
+	Reference      : 128 (0x80)
+	Type           : ascii-numeric
+	Tries left     : 3
+
+PIN [PIV PUK]
+	Object Flags   : [0x01], private
+	ID             : 02
+	Flags          : [0xF2], local, initialized, needs-padding, unblockingPin, soPin
+	Length         : min_len:4, max_len:8, stored_len:8
+	Pad char       : 0xFF
+	Reference      : 129 (0x81)
+	Type           : ascii-numeric
+```
+
 ```shell
 $ pkcs15-tool --list-keys
 Using reader with a card: Yubico YubiKey OTP+FIDO+CCID