First release. It should work on both Rock v5 and v6.
Instructions:
Just download the .dll files that you want to use from below and drop them into the RockWeb/Bin folder. For most people this will be C:\inetpub\wwwroot\Bin.
After dropping them in, Rock should restart and you should be able to find the extra workflow actions in the Extra Actions category.
Details:
org.newpointe.ExtraActions.RunPowershell.dll - Has the Run Powershell action. It's a powerful action, so I'm including it seperately.
org.newpointe.ExtraActions.dll - Has all the other actions in it: Redirect and Show HTML.