add script for building releases

.gitignore

@@ -1,2 +1,3 @@
 .vscode/*
 iopshell
+build/

build-release.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+OUT="./build/iopshell"
+mkdir build/
+
+# linux specific
+for arch in {386,amd64,arm,arm64,mips,mipsle,mips64,mips64le,riscv64}; do
+    echo "linux/$arch"
+    GOOS=linux GOARCH=$arch go build -ldflags="-s -w" -o "$OUT.$arch" iopshell.go
+done
+
+# windows specific
+for arch in {386,amd64,arm}; do
+    echo "windows/$arch"
+    GOOS=windows GOARCH=$arch go build -ldflags="-s -w" -o "$OUT.$arch.exe" iopshell.go
+done