Update README with all-in-one installation command

- Added single-line command to download and run
- Downloads from Gitea, extracts, and launches in one go
- Keeps original method as alternative for already installed

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -46,15 +46,16 @@ server-toolkit/
 
 ## 🚀 Quick Start
 
-### Running
+### Installation & Running
 
 ```bash
-# Direct method
-bash /root/server-toolkit/launcher.sh
+# Download and run in one command
+curl -sL https://git.mull.lol/cschantz/Linux-Server-Management-Toolkit/archive/main.tar.gz | tar xz && cd Linux-Server-Management-Toolkit && bash launcher.sh
+```
 
-# Or make executable and run
-chmod +x /root/server-toolkit/launcher.sh
-/root/server-toolkit/launcher.sh
+Or if already downloaded:
+```bash
+bash /root/server-toolkit/launcher.sh
 ```
 
 ## ✨ Key Features