The script is available for download from http://gallery.technet.microsoft.com/How-to-add-run-MSI-as-f4bc089f. You can also use Microsoft Script Browser for Windows PowerShell ISE to download the sample with one button click from within your scripting environment.
This script is to add Run MSI as Administrator to context menu in Windows 8.
Some MSI files need to run with administrator privilege. However there are no Run MSI as Administrator options in the Windows system. This script is to add this right click option for MSI files.
You can find more All-In-One Script Framework script samples at https://aka.ms/onescriptingallery