add Perl binding to README

README.md

@@ -10,7 +10,7 @@ It offers some unparalleled features:
 
 - Multi-architecture, with support for Arm, Arm64 (AArch64/Armv8), Hexagon, Mips, PowerPC, Sparc, SystemZ & X86 (include 16/32/64bit).
 - Clean/simple/lightweight/intuitive architecture-neutral API.
-- Implemented in C/C++ languages, with bindings for Python, NodeJS, Ruby, Go, Rust, Haskell & OCaml available.
+- Implemented in C/C++ languages, with bindings for Perl, Python, NodeJS, Ruby, Go, Rust, Haskell & OCaml available.
 - Native support for Windows & \*nix (with Mac OSX, Linux, *BSD & Solaris confirmed).
 - Thread-safe by design.
 - Open source - with a dual license.

bindings/README

@@ -9,3 +9,9 @@ Except Python, all other bindings are contributed by community.
 - Rust binding: by Remco Verhoef
 - Haskell binding: by Adrian Herrera
 - OCaml binding: by Aziem Chawdhary
+
+
+Other bindings maintained externally by community:
+
+- Perl-Keystone: Perl binding made by @t00sh.
+    https://github.com/t00sh/perl-keystone