Update README

README.md

@@ -121,6 +121,7 @@ These don't derive traits, but derive static methods instead.
    This is very basic if you need more customization for your constructor, check
    out the [`derive-new`] crate.
 2. [`IsVariant`], for each variant `foo` of an enum type, derives a `is_foo` method.
+3. [`Unwrap`], for each variant `foo` of an enum type, derives an `unwrap_foo` method.
 
 ## Generated code
 
@@ -180,3 +181,4 @@ extern crate derive_more;
 
 [`Constructor`]: https://jeltef.github.io/derive_more/derive_more/constructor.html
 [`IsVariant`]: https://jeltef.github.io/derive_more/derive_more/is_variant.html
+[`Unwrap`]: https://jeltef.github.io/derive_more/derive_more/unwrap.html