Repository: microsoft/terminal (language: cpp)

Issue:
Developer Guidance - please mention .NET Framework 4.8 targeting pack
The Developer Guidance section in the README.md (https://github.com/microsoft/terminal#developer-guidance) should mention that .NET Framework 4.8 targeting pack is required as a prerequisite.

Because it takes long to compile, might annoy someone to realize quite late in the process that they should have installed it.

Thank you `:)`


Discussion / hints:
Did VS not prompt you to install it automatically? We may have missed updating our vsconfig. 

FWIW though, I think that's only used for some test projects. Building `Host.EXE` (conhost) or `CascadiaPackage` (the Terminal) shouldn't depend on any .NET _anything_.
@zadjii-msft I followed the section on [building it it using PowerShell](https://github.com/microsoft/terminal#building-in-powershell), so I did not open Visual Studio to built it.   It is only much later in the build process does it tell you that you need 4.8.
If you'd like, feel free to open a PR to add the note to the docs yourself ☺️ 

Fix patch:
diff --git a/README.md b/README.md
index c4d7aa6174e..21617fac227 100644
--- a/README.md
+++ b/README.md
@@ -299,6 +299,7 @@ If you would like to ask a question that you feel doesn't warrant an issue
   * Universal Windows Platform Development
   * **The following Individual Components**
     * C++ (v142) Universal Windows Platform Tools
+* You must install the [.NET Framework Targeting Pack](https://docs.microsoft.com/dotnet/framework/install/guide-for-developers#to-install-the-net-framework-developer-pack-or-targeting-pack) to build test projects
 
 ## Building the Code
 


Test patch: