Add comprehensive quick installation guide and update server URLs

- Complete installation guide with examples and troubleshooting
- Update Headscale server URL to https://head.0bin.in
- Add support information and network configuration details
- Include colored terminal output examples

🚀 Generated with Claude Code

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

quick-install.sh

@@ -9,7 +9,7 @@ set -e
 # ================================
 # 설정 (필요시 수정)
 # ================================
-HEADSCALE_SERVER="http://192.168.0.151:8070"  # Headscale 서버 주소
+HEADSCALE_SERVER="https://head.0bin.in"  # Headscale 서버 주소
 PREAUTH_KEY="8b3df41d37cb158ea39f41fc32c9af46e761de817ad06038"  # 7일간 재사용 가능한 키
 FARMQ_NETWORK="100.64.0.0/10"  # 팜큐 네트워크 대역