add installer script for Windows Update Powershell module

scripts/install-windows-update-ps-module.ps1

@@ -0,0 +1,25 @@
+#   Description:
+# This script will setup the Windows Update Powershell module. With it you will
+# be able to download, install, uninstall and hide Windows updates using
+# Powershell. For a list of commands invoke
+# `PS> Get-Command -Module PSWindowsUpdate`.
+
+$ErrorActionPreference = "Stop"
+
+$download_uri = "https://gallery.technet.microsoft.com/scriptcenter/2d191bcd-3308-4edd-9de2-88dff796b0bc/file/41459/43/PSWindowsUpdate.zip"
+
+echo "Downloading PSWindowsUpdate zipfile"
+
+# TODO replace this with wget when it works again on a clean install
+$wc = new-object net.webclient
+$wc.DownloadFile($download_uri, "$PSHOME/Modules/PSWindowsUpdate.zip")
+
+echo "Extracting PSWindowsUpdate zipfile"
+Add-Type -AssemblyName "system.io.compression.filesystem"
+[io.compression.zipfile]::ExtractToDirectory("$PSHOME/Modules/PSWindowsUpdate.zip", "$PSHOME/Modules/")
+
+echo "Removing zipfile"
+rm "$PSHOME/Modules/PSWindowsUpdate.zip"
+
+echo "Import Module automatically when Powershell starts"
+echo "Import-Module PSWindowsUpdate" >> "$PSHOME/profile.ps1"