Update README.md

README.md

@@ -103,6 +103,7 @@ The bakrey will dynamicly create some additional files in the _curl_ sub directo
 | curl_item_#.ca_cert | Configure certificate verification -> Certificate to verify against | Cert(chain) as PEM |
 | curl_item_#.header | Set request header / Set API key header  | Header: Value line by line |
 | curl_item_#.post_binary | Send HTTP POST data  | Post data as binary |
+| curl_item_#.priv_key | Configure authentication -> Private/public key -> Private key | Private key for SCP/SFTP/SSP |
 | curl_item_#.regex | Regular expression to expect in content |  Regex pattern to match on response |
 | curl_item_#.search_header | Strings to expect in header | Strings to search for in header line by line |
 | curl_item_#.search_response | Strings to expect in response | Strings to search for in response line by line |