PowerShell Scripts Run via IIS

I am looking to run a PowerShell script that just provides me "OK" / "NOT OK" output (with minimal HTML), via IIS.  I am looking to run them properly, with the most simple integration for other people to use them on their IIS 7 IIS 8 servers (Server 2008 and Server 2012).  That has brought me to .NET and ASP, I think.  (I may be a neanderthal, coming form a bash script / CGI mentality in which I'd just hit "http://servername/cgi-bin/checkit.sh," and get my "OK" / "NOT OK" response, but I take it that is NOT the current/future Microsoft approach.)  Do I need to learn ASP to do this right?  I have ISS installed, I used "Web Platform Installer 5.0" to install .NET 4.5 (which brought along .NET 4.5 Extended, ISAPI Filters, WAS.NET Environment, .NET Extensibility, .NET 3.5 for Windows 8, and ASP.NET.  I STILL wasn't able to add a "script map" which I was hoping would let me provide ...