Update README.md (#52)

You cannot run the tool to build .intunewin packages unless .NET Framework 4.7.2 is installed

README.md

@@ -8,10 +8,15 @@ Manage Windows Apps (.intunewin) with Intune
 
 Use the Microsoft Win32 Content Prep Tool to pre-process Windows Classic apps. The packaging tool converts application installation files into the .intunewin format. The packaging tool also detects the parameters required by Intune to determine the application installation state. After you use this tool on your apps, you will be able to upload and assign the apps in the Microsoft Intune console.
 
+**Prerequisites**
+
+.NET Framework 4.7.2 
+
 Before you install and the use Microsoft Win32 Content Prep Tool you **must**:
 
 - Review the [Microsoft License Terms for Microsoft Win32 Content Prep Tool](https://github.com/Microsoft/Microsoft-Win32-Content-Prep-Tool/blob/master/Microsoft%20License%20Terms%20For%20Win32%20Content%20Prep%20Tool.pdf). Print and retain a copy of the license terms for your records. By downloading and using Microsoft Win32 Content Prep Tool, you agree to such license terms. If you do not accept them, do not use the software.
 - Review the [Microsoft Intune Privacy Statement](https://docs.microsoft.com/legal/intune/microsoft-intune-privacy-statement) for information on the privacy policy of the Microsoft Win32 Content Prep Tool.
+ 
 
 Sample commands to use for the Microsoft Win32 Content Prep Tool: