README.md in signer-1.3.1 vs README.md in signer-1.4.0

@@ -223,5 +223,7 @@
 
 ```ruby
 signer.digest!(signer.binary_security_token_node) # Constructing tag and digesting it
 signer.sign! # No need to pass a :security_token option, as we already constructed and inserted this node
 ```
+
+If you need to use canonicalization with inclusive namespaces you can pass array of namespace prefixes in `:inclusive_namespaces` option in both `digest!` and `sign!` methods.