add gunshi as a user

Author: AmirSa12

README.md

@@ -6,6 +6,8 @@ Shell autocompletions are largely missing in the JavaScript CLI ecosystem. tab p
 
 Additionally, tab supports autocompletions for `pnpm`, `npm`, `yarn`, and `bun`.
 
+Modern CLI libraries like [Gunshi](https://github.com/kazupon/gunshi) include tab completion natively in their core.
+
 As CLI tooling authors, if we can spare our users a second or two by not checking documentation or writing the `-h` flag, we're doing them a huge favor. The unconscious mind loves hitting the [TAB] key and always expects feedback. When nothing happens, it breaks the user's flow - a frustration apparent across the whole JavaScript CLI tooling ecosystem.
 
 tab solves this complexity by providing autocompletions that work consistently across `zsh`, `bash`, `fish`, and `powershell`.