Add Windows to the mix (#49)

src/install-elixir.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -eo pipefail
+
+cd "$RUNNER_TEMP"
+
+VSN=${1}
+FILE_INPUT="${VSN}.zip"
+FILE_OUTPUT=elixir.zip
+DIR_FOR_BIN=.setup-beam/elixir
+
+rm -f "${FILE_OUTPUT}"
+rm -rf "${DIR_FOR_BIN}"
+wget -q -O "${FILE_OUTPUT}" "https://repo.hex.pm/builds/elixir/${FILE_INPUT}"
+mkdir -p "${DIR_FOR_BIN}"
+unzip -q -d "${DIR_FOR_BIN}" "${FILE_OUTPUT}"
+rm -f "${FILE_OUTPUT}"
+echo "$(pwd)/${DIR_FOR_BIN}/bin" >> "$GITHUB_PATH"
+echo "Installed Elixir version follows"
+${DIR_FOR_BIN}/bin/iex -v