Merge pull request #521 from kojix2/patch-1

Update Ruby bindings

README.md

@@ -166,7 +166,7 @@ Nim | [ui](https://github.com/nim-lang/ui)
 Perl6 | [perl6-libui](https://github.com/Garland-g/perl6-libui)
 PHP | [ui](https://github.com/krakjoe/ui)
 Python | [pylibui](https://github.com/joaoventura/pylibui)
-Ruby | [libui-ruby](https://github.com/jamescook/libui-ruby)
+Ruby | [libui-ruby](https://github.com/jamescook/libui-ruby), [libui](https://github.com/kojix2/libui)
 Rust | [libui-rs](https://github.com/rust-native-ui/libui-rs)
 Scala | [scalaui](https://github.com/lolgab/scalaui)
 Swift | [libui-swift](https://github.com/sclukey/libui-swift)