Add one-click client installation section to README

- Add quick installation commands for new servers
- Include support for multiple Linux distributions
- Maintain original README structure and content
- Add curl/wget installation methods

🚀 Generated with Claude Code

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

README.md

@@ -130,3 +130,24 @@ git add .
 git commit -m "Update: 설명"
 git push origin main
 ```
+
+## ⚡ 새 서버 원클릭 등록
+
+새로운 리눅스 서버를 팜큐 네트워크에 **한 번의 명령**으로 등록:
+
+### 빠른 설치 (권장)
+```bash
+curl -fsSL https://git.0bin.in/thug0bin/headscale-tailscale-replacement/raw/branch/feature/working-headscale-setup/quick-install.sh | sudo bash
+```
+
+### 또는 wget 사용
+```bash
+wget -qO- https://git.0bin.in/thug0bin/headscale-tailscale-replacement/raw/branch/feature/working-headscale-setup/quick-install.sh | sudo bash
+```
+
+### 지원 OS
+- Ubuntu, Debian, CentOS, RHEL, Rocky Linux, Fedora, Arch Linux
+- 자동 Tailscale 설치 + Headscale 등록
+- 방화벽 자동 설정 + 연결 검증
+
+**30초 만에 팜큐 네트워크 연결 완료!** 🎉