Add installation section and install script to README

- Add prominent link to interactive playground at top of README
- Add comprehensive Installation section with:
  - Quick install script (curl | sh)
  - Manual download instructions for Linux/macOS/Windows
  - IDE integration examples (VSCode, Neovim)
- Create install.sh script that:
  - Auto-detects Linux/macOS platform
  - Downloads and extracts latest release
  - Provides clear PATH setup instructions
  - Includes link to playground

Makes it much easier for users to get started with Null-Safe Clang!

Author: cs01

README.md

@@ -2,6 +2,8 @@
 
 An experimental Clang fork that adds flow-sensitive null safety to C and C++, inspired by modern languages like TypeScript, Kotlin, and Rust.
 
+**Try it online:** [Interactive Playground](https://cs01.github.io/llvm-project/) - See null-safety warnings in real-time in your browser!
+
 ## What This Adds
 
 This compiler adds two key features to prevent null pointer crashes:
@@ -32,6 +34,65 @@ This experimental fork of Clang adds flow-sensitive nullability analysis while r
 
 By default, strict nullability is enabled and issues warnings. You can promote warnings to errors with `-Werror=nullability`, or disable the feature entirely with `-fno-strict-nullability`.
 
+## Installation
+
+### Quick Install (Linux/macOS)
+
+Download and extract the latest release for your platform:
+
+```bash
+# Auto-detect your platform and install
+curl -fsSL https://raw.githubusercontent.com/cs01/llvm-project/null-safe-c-dev/install.sh | sh
+
+# Or manually download:
+# Linux x86_64:
+curl -L https://github.com/cs01/llvm-project/releases/latest/download/clang-nullsafe-linux-x86_64.tar.gz | tar xz
+
+# macOS (Intel/Apple Silicon):
+curl -L https://github.com/cs01/llvm-project/releases/latest/download/clang-nullsafe-macos-universal.tar.gz | tar xz
+
+# Add to PATH
+export PATH="$PWD/bin:$PATH"
+clang --version
+```
+
+### Windows
+
+Download the Windows release:
+```bash
+curl -L https://github.com/cs01/llvm-project/releases/latest/download/clang-nullsafe-windows-x86_64.tar.gz -o clang-nullsafe.tar.gz
+tar -xzf clang-nullsafe.tar.gz
+# Add bin\ directory to your PATH
+clang --version
+```
+
+### What's Included
+
+Each release includes:
+- **`clang`** - The Null-Safe C compiler with flow-sensitive null checking
+- **`clangd`** - Language server for IDE integration (VSCode, vim, Neovim, Emacs, etc.)
+
+### IDE Integration
+
+Once installed, configure your editor to use the null-safe `clangd`:
+
+**VSCode:**
+```json
+// settings.json
+{
+  "clangd.path": "/path/to/null-safe-clang/bin/clangd"
+}
+```
+
+**Neovim/vim:**
+```lua
+require('lspconfig').clangd.setup({
+  cmd = { '/path/to/null-safe-clang/bin/clangd' }
+})
+```
+
+This gives you real-time null-safety warnings as you type!
+
 
 ## Memory Safety in General
 

install.sh

@@ -0,0 +1,65 @@
+#!/bin/bash
+# Null-Safe Clang installer
+# Auto-detects your platform and installs the latest release
+
+set -e
+
+REPO="cs01/llvm-project"
+INSTALL_DIR="${INSTALL_DIR:-$HOME/.local/null-safe-clang}"
+
+echo "🔍 Detecting platform..."
+OS=$(uname -s)
+ARCH=$(uname -m)
+
+# Determine the correct release file
+if [ "$OS" = "Linux" ] && [ "$ARCH" = "x86_64" ]; then
+    RELEASE_FILE="clang-nullsafe-linux-x86_64.tar.gz"
+    echo "✓ Detected: Linux x86_64"
+elif [ "$OS" = "Darwin" ]; then
+    RELEASE_FILE="clang-nullsafe-macos-universal.tar.gz"
+    echo "✓ Detected: macOS (Universal)"
+else
+    echo "❌ Unsupported platform: $OS $ARCH"
+    echo "Please download manually from:"
+    echo "https://github.com/$REPO/releases/latest"
+    exit 1
+fi
+
+# Download URL
+URL="https://github.com/$REPO/releases/latest/download/$RELEASE_FILE"
+
+echo "📦 Downloading Null-Safe Clang..."
+echo "   $URL"
+
+# Create install directory
+mkdir -p "$INSTALL_DIR"
+cd "$INSTALL_DIR"
+
+# Download and extract
+if command -v curl >/dev/null 2>&1; then
+    curl -L "$URL" | tar xz --strip-components=0
+elif command -v wget >/dev/null 2>&1; then
+    wget -O - "$URL" | tar xz --strip-components=0
+else
+    echo "❌ Neither curl nor wget found. Please install one of them."
+    exit 1
+fi
+
+echo "✓ Installed to: $INSTALL_DIR"
+echo ""
+echo "📝 To use Null-Safe Clang, add this to your shell profile (~/.bashrc, ~/.zshrc, etc.):"
+echo ""
+echo "    export PATH=\"$INSTALL_DIR/bin:\$PATH\""
+echo ""
+echo "Then reload your shell or run:"
+echo ""
+echo "    source ~/.bashrc  # or ~/.zshrc"
+echo ""
+echo "Verify installation:"
+echo "    clang --version"
+echo ""
+echo "Try it out:"
+echo "    echo 'void f(int* p) { *p = 42; }' | clang -x c - -fsyntax-only"
+echo ""
+echo "🎮 Try the interactive playground:"
+echo "    https://cs01.github.io/llvm-project/"