Update README

Author: timholy

README.md

@@ -3,6 +3,7 @@
 This package performs operations on Julia's [lowered AST](https://docs.julialang.org/en/latest/devdocs/ast/).
 Current utilities include:
 - `signature`: compute the signature of a specific method
-- `methoddef!` a method signature from lowered code, resolving gensymmed names (https://github.com/JuliaLang/julia/issues/30908)
+- `methoddef!`: extract a method signature from lowered code, resolving gensymmed names (https://github.com/JuliaLang/julia/issues/30908)
+- `bodymethod`: find the method that executes the body of a keyword-argument function
 
 You can learn more about these with, e.g., `?methoddef!`