build(): add actual publish script.

scripts/release/enact-release.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+# `npm whoami` errors and dies if you're not logged in,
+# so we redirect the stderr output to /dev/null since we don't care.
+NPM_USER=$(npm whoami 2> /dev/null)
+
+if [ "${NPM_USER}" != "angular2-material" ]; then
+  echo "You must be logged in as 'angular2-material' to publish. Use 'npm login'."
+  exit
+fi
+
+set -ex
+
+for package in ./deploy/*
+do
+  npm publish ${package}
+done