Update the readme with the new command switch

README.md

@@ -40,7 +40,7 @@ $ crypt4gh -h
 Utility for the cryptographic GA4GH standard, reading from stdin and outputting to stdout.
 
 Usage:
-   {PROG} [-hv] [--log <file>] encrypt [--sk <path>] --recipient_pk <path> [--recipient_pk <path>]... [--range <start-end>]  [--header <path>]
+   {PROG} [-hv] [--log <file>] encrypt [--sk <path>] --recipient_pk <path> [--recipient_pk <path>]... [--range <start-end>]  [--header <path>] [--expiration <date>]
    {PROG} [-hv] [--log <file>] decrypt [--sk <path>] [--sender_pk <path>] [--range <start-end>]
    {PROG} [-hv] [--log <file>] rearrange [--sk <path>] --range <start-end>
    {PROG} [-hv] [--log <file>] reencrypt [--sk <path>] --recipient_pk <path> [--recipient_pk <path>]... [--trim] [--header-only]
@@ -49,14 +49,15 @@ Options:
    -h, --help             Prints this help and exit
    -v, --version          Prints the version and exits
    --log <file>           Path to the logger file (in YML format)
-   --sk <keyfile>         Curve25519-based Private key.
+   --sk <keyfile>         Curve25519-based Private key
                           When encrypting, if neither the private key nor C4GH_SECRET_KEY are specified, we generate a new key 
    --recipient_pk <path>  Recipient's Curve25519-based Public key
    --sender_pk <path>     Peer's Curve25519-based Public key to verify provenance (akin to signature)
    --range <start-end>    Byte-range either as  <start-end> or just <start> (Start included, End excluded)
    -t, --trim             Keep only header packets that you can decrypt
    --header <path>        Where to write the header (default: stdout)
    --header-only          Whether the input data consists only of a header (default: false)
+   --expiration <date>    Expiration date (in ISO format)
 
 
 Environment variables: