feat(readme): add Homebrew install method (#12)

Wush was added to Homebrew/homebrew-core repo. See:  Homebrew/homebrew-core#183296

Signed-off-by: Vijay <[email protected]>
Co-authored-by: Muhammad Atif Ali <[email protected]>

Author: indianets

README.md

@@ -19,10 +19,16 @@ shells over a peer-to-peer WireGuard connection. It's similar to
 
 ## Install
 
+Using install script
 ```bash
 curl -fsSL https://wush.dev/install.sh | sh
 ```
 
+Using Homebrew
+```bash
+brew install wush
+```
+
 For a manual installation, see the [latest release](https://github.com/coder/wush/releases/latest).
 
 > [!TIP]