Added support for TLS 1.2

Author: phecke

powerapps-docs/developer/common-data-service/download-tools-nuget.md

@@ -40,6 +40,7 @@ You can download tools used in development from NuGet using the  powershell scri
 1. Copy and paste the following PowerShell script into the PowerShell window and press Enter.
 
     ```powershell
+    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
     $sourceNugetExe = "https://dist.nuget.org/win-x86-commandline/latest/nuget.exe"
     $targetNugetExe = ".\nuget.exe"
     Remove-Item .\Tools -Force -Recurse -ErrorAction Ignore