Add script to simplify macOS and linux install

install.sh

@@ -0,0 +1,33 @@
+#!/bin/sh
+# Adapted from the Deno installer: Copyright 2019 the Deno authors. All rights reserved. MIT license.
+# Ref: https://github.com/denoland/deno_install
+# TODO(everyone): Keep this script simple and easily auditable.
+
+# TODO(mf): this should work on Linux and macOS. Not intended for Windows. 
+
+set -e
+
+os=$(uname -s)
+arch=$(uname -m)
+
+if [ $# -eq 0 ]; then
+	goose_uri="https://github.com/pressly/goose/releases/latest/download/goose_${os}_${arch}"
+else
+	goose_uri="https://github.com/pressly/goose/releases/download/${1}/goose_${os}_${arch}"
+fi
+
+goose_install="${GOOSE_INSTALL:-/usr/local}"
+bin_dir="${goose_install}/bin"
+exe="${bin_dir}/goose"
+
+if [ ! -d "${bin_dir}" ]; then
+	mkdir -p "${bin_dir}"
+fi
+
+curl --silent --show-error --location --fail --location --output "${exe}" "$goose_uri"
+chmod +x "${exe}"
+
+echo "Goose was installed successfully to ${exe}"
+if command -v goose >/dev/null; then
+	echo "Run 'goose --help' to get started"
+fi