Added options for v2 signing to CLI section of the js README.

js/sign/README.md

@@ -104,14 +104,18 @@ This package also includes 2 CLI tools
 There are the following command-line flags available:
 
 - (required) `--privateKey <filePath>` (`-k <filePath>`)  
-  which takes the path to ed25519 private key.
+  which takes the path to ed25519 private key. This can be specified multiple times.
 - (required) `--input <filePath>` (`-i <filePath>`)  
   which takes the path to the web bundle to be signed.
 - (optional) `--output <filePath>` (`-o <filePath>`)  
   which takes the path to the wanted signed web bundle output. Default:
   `signed.swbn`.
+- (optional) `--version <version>`  
+  which can be either `v1` or `v2`, defaulting to `v1`. Sets the integrity block format.
+- (required if `v2`) `--web-bundle-id <web-bundle-id>`  
+  which takes the `web-bundle-id` to be associated with the web bundle.
 
-Example command:
+Example commands:
 
 ```bash
 wbn-sign \
@@ -120,6 +124,17 @@ wbn-sign \
 -k ~/path/to/ed25519key.pem
 ```
 
+```bash
+wbn-sign \
+-i ~/path/to/webbundle.wbn \
+-o ~/path/to/signed-webbundle.swbn \
+-k ~/path/to/ed25519key.pem \
+-k ~/path/to/ecdsa_p256key.pem
+--version v2 \
+--web-bundle-id \
+  amfcf7c4bmpbjbmq4h4yptcobves56hfdyr7tm3doxqvfmsk5ss6maacai
+```
+
 ### Running wbn-dump-id
 
 There are the following command-line flags available: