Create INSTALLATION.md

Author: Pnwcomputers

docs/INSTALLATION.md

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+# Installation Guide
+
+## System Requirements
+
+### Minimum Requirements
+- **Operating System**: Windows 10 (1909) or Windows 11
+- **PowerShell**: Version 5.1 or later
+- **RAM**: 4 GB minimum, 8 GB recommended
+- **Storage**: 2 GB free space for applications
+- **Network**: Internet connection for WinGet packages
+
+### Recommended Requirements
+- **PowerShell**: Version 7.x for best performance
+- **RAM**: 16 GB for development workstations
+- **Storage**: SSD for faster deployment
+- **Network**: Broadband connection (10+ Mbps)
+
+## Installation Methods
+
+### Method 1: Direct Download
+1. Download the latest release from GitHub
+2. Extract to desired location
+3. Run as Administrator
+
+### Method 2: Git Clone
+```bash
+git clone https://github.com/Pnwcomputers/SystemTester.git
+cd SystemTester