Add description

README.md

@@ -43,8 +43,11 @@ export GITHUB_URL=https://mirror.ghproxy.com/https://github.com/
 
 ## FAQ
 
-- **Why is there a lack of updated versions?**<br>
-To minimize the working requirements, vfox-ruby currently uses precompiled packages from conda-forge on Linux and macOS. You could open an issue in the [ruby-feedstock](https://github.com/conda-forge/ruby-feedstock/issues) repository to remind the maintainers to provide the latest build. Once the latest version is available, the plugin will be updated soon.
+- **Why is there a lack of updated versions?** <br>
+Currently, vfox-ruby uses precompiled packages from conda-forge and Homebrew on Linux and macOS. You could open an issue in the [ruby-feedstock](https://github.com/conda-forge/ruby-feedstock/issues) repository to remind the maintainers to provide the latest build. Once the latest version is available, the plugin will be updated soon.
 
-- **Are there any dependencies required to use this plugin?**<br>
-On Windows, vfox-ruby uses standalone 7-ZIP archives provided by [RubyInstaller](https://github.com/oneclick/rubyinstaller2/wiki/faq). On Linux and macOS, installing Ruby requires no dependencies other than the built-in commands. Installing TruffleRuby requires `bash`, `make`, `gcc`, `g++` and `zlib-dev`. For more details, refer to the [dependencies](https://github.com/oracle/truffleruby/blob/master/README.md#Dependencies) section.
+- **Are there any dependencies required to use this plugin?** <br>
+On Windows, vfox-ruby uses standalone 7-ZIP archives provided by [RubyInstaller](https://github.com/oneclick/rubyinstaller2/wiki/faq). On Linux and macOS, installing Ruby requires no dependencies other than the built-in commands. Installing TruffleRuby requires `bash`, `make`, `gcc`, `g++` and `zlib-dev`. For more details, refer to the [dependencies](https://github.com/oracle/truffleruby/blob/master/README.md#Dependencies) section.
+
+- **I want JRuby, Rubinius ... Can vfox-ruby provide them?** <br>
+No! Due to the non-compiled implementation, vfox-ruby is only intended to provide CRuby and TruffleRuby.