feat: CLI preview / branch terminal (#2535)

Co-authored-by: Amp <amp@ampcode.com>

Synced from monorepo@acddcd67821ded5958b4f86b1381d2e42948a737

Author: divyenduz

.sync-commit

@@ -1 +1 @@
-b5bb1cd59d38134fa2778d5920edc04f82bed8ae
+acddcd67821ded5958b4f86b1381d2e42948a737

README.md

@@ -13,9 +13,15 @@ The official command-line interface for [Xata](https://xata.io).
 ### Installation
 
 ```bash
-npm install -g @xata.io/cli
+# macOS / Linux
+curl -fsSL https://xata.io/install.sh | bash
+
+# Windows PowerShell
+powershell -c "irm https://xata.io/install.ps1 | iex"
 ```
 
+After installation, run `xata upgrade` to update to the latest CLI release.
+
 ### Documentation
 
 See the [Xata documentation](https://xata.io/docs/cli) for usage instructions.