Update readme

README.md

@@ -15,6 +15,19 @@ Available as both a **Rust library** and a **CLI tool**.
 
 ## Installation
 
+### Quick install (Linux / macOS)
+
+```sh
+curl -sSfL https://raw.githubusercontent.com/OWNER/openapi-aggregator/main/install.sh | sh
+```
+
+Install a specific version or to a custom directory:
+
+```sh
+VERSION=v0.1.0 curl -sSfL https://raw.githubusercontent.com/OWNER/openapi-aggregator/main/install.sh | sh
+INSTALL_DIR=~/.local/bin curl -sSfL https://raw.githubusercontent.com/OWNER/openapi-aggregator/main/install.sh | sh
+```
+
 ### From source
 
 ```sh

install.sh

@@ -0,0 +1,121 @@
+#!/bin/sh
+# Install script for openapi-aggregator
+# Usage: curl -sSfL https://raw.githubusercontent.com/OWNER/openapi-aggregator/main/install.sh | sh
+#
+# Options (via environment variables):
+#   VERSION   - specific version to install (e.g. v0.1.0). Defaults to latest.
+#   INSTALL_DIR - directory to install to. Defaults to /usr/local/bin.
+
+set -e
+
+REPO="OWNER/openapi-aggregator"
+BINARY="openapi-aggregator"
+INSTALL_DIR="${INSTALL_DIR:-/usr/local/bin}"
+
+# --- helpers ---------------------------------------------------------------
+
+info()  { printf '\033[1;34m[info]\033[0m  %s\n' "$1"; }
+error() { printf '\033[1;31m[error]\033[0m %s\n' "$1" >&2; exit 1; }
+
+need() {
+  command -v "$1" >/dev/null 2>&1 || error "required command not found: $1"
+}
+
+# --- detect OS & arch ------------------------------------------------------
+
+detect_target() {
+  OS=$(uname -s)
+  ARCH=$(uname -m)
+
+  case "$OS" in
+    Linux)
+      case "$ARCH" in
+        x86_64)  TARGET="x86_64-unknown-linux-musl" ;;
+        aarch64) TARGET="aarch64-unknown-linux-musl" ;;
+        arm64)   TARGET="aarch64-unknown-linux-musl" ;;
+        *)       error "unsupported Linux architecture: $ARCH" ;;
+      esac
+      EXT="tar.gz"
+      ;;
+    Darwin)
+      case "$ARCH" in
+        x86_64)  TARGET="x86_64-apple-darwin" ;;
+        arm64)   TARGET="aarch64-apple-darwin" ;;
+        aarch64) TARGET="aarch64-apple-darwin" ;;
+        *)       error "unsupported macOS architecture: $ARCH" ;;
+      esac
+      EXT="tar.gz"
+      ;;
+    MINGW*|MSYS*|CYGWIN*|Windows_NT)
+      TARGET="x86_64-pc-windows-msvc"
+      EXT="zip"
+      ;;
+    *)
+      error "unsupported OS: $OS"
+      ;;
+  esac
+
+  info "detected target: $TARGET"
+}
+
+# --- resolve version -------------------------------------------------------
+
+resolve_version() {
+  if [ -n "$VERSION" ]; then
+    TAG="$VERSION"
+  else
+    need curl
+    TAG=$(curl -sSfL "https://api.github.com/repos/${REPO}/releases/latest" \
+      | grep '"tag_name"' | head -1 | sed 's/.*"tag_name": *"\([^"]*\)".*/\1/')
+    [ -n "$TAG" ] || error "could not determine latest release"
+  fi
+  info "installing version: $TAG"
+}
+
+# --- download & install ----------------------------------------------------
+
+download_and_install() {
+  need curl
+
+  FILENAME="${BINARY}-${TARGET}.${EXT}"
+  URL="https://github.com/${REPO}/releases/download/${TAG}/${FILENAME}"
+
+  TMPDIR=$(mktemp -d)
+  trap 'rm -rf "$TMPDIR"' EXIT
+
+  info "downloading $URL"
+  curl -sSfL -o "${TMPDIR}/${FILENAME}" "$URL" \
+    || error "download failed — check that version ${TAG} exists and has a ${TARGET} build"
+
+  info "extracting..."
+  case "$EXT" in
+    tar.gz)
+      tar xzf "${TMPDIR}/${FILENAME}" -C "$TMPDIR"
+      ;;
+    zip)
+      need unzip
+      unzip -q "${TMPDIR}/${FILENAME}" -d "$TMPDIR"
+      ;;
+  esac
+
+  # Install binary
+  if [ -w "$INSTALL_DIR" ]; then
+    mv "${TMPDIR}/${BINARY}" "${INSTALL_DIR}/${BINARY}"
+  else
+    info "elevated permissions required to install to ${INSTALL_DIR}"
+    sudo mv "${TMPDIR}/${BINARY}" "${INSTALL_DIR}/${BINARY}"
+  fi
+
+  chmod +x "${INSTALL_DIR}/${BINARY}"
+
+  info "installed ${BINARY} to ${INSTALL_DIR}/${BINARY}"
+  "${INSTALL_DIR}/${BINARY}" --version 2>/dev/null || true
+}
+
+# --- main ------------------------------------------------------------------
+
+detect_target
+resolve_version
+download_and_install
+
+info "done!"