docs: update ruby gem (#274)

Author: kiwamizamurai

README.md

@@ -63,7 +63,8 @@ This lib has numerous ports to other languages, for server side processing, most
 - **PHP:** [by nullpunkt](https://github.com/nullpunkt/lz-string-php)
 - **Python3:** [by eduardtomasek](https://github.com/eduardtomasek/lz-string-python)
 - **Another Python:** [by marcel-dancak](https://github.com/marcel-dancak/lz-string-python)
-- **Ruby** [by Altivi](https://github.com/Altivi/lz_string)
+- **Ruby** [by kiwamizamurai](https://github.com/kiwamizamurai/lzstring_ruby)
+- ~~**Ruby** [by Altivi](https://github.com/Altivi/lz_string)~~ (only partial support)
 - **Go** [I helped a friend to write a Go implementation of the decompression algorithm](https://github.com/pieroxy/lz-string-go)
 - **Go** [Austin wrote the decompression part as well](https://github.com/Lazarus/lz-string-go)
 - **Go** [by daku10, another implementation supports multiple encoding formats and can be used as a CLI tool](https://github.com/daku10/go-lz-string)