Updated project to VS 2019

Author: Magnus Gether Sørensen

XrmDefinitelyTyped.sln

@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 15
-VisualStudioVersion = 15.0.27130.2020
+# Visual Studio 16
+VisualStudioVersion = 16.0.30503.244
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = ".paket", ".paket", "{63297B98-5CED-492C-A5B7-A5B4F73CF142}"
 	ProjectSection(SolutionItems) = preProject

build.cmd

@@ -1,18 +1,13 @@
 @echo off
 cls
 
-.paket\paket.bootstrapper.exe
+WHERE nuget
 if errorlevel 1 (
+  echo nuget not installed. Please install with Chocolatey
   exit /b %errorlevel%
 )
 
-.paket\paket.exe restore
-if errorlevel 1 (
-  exit /b %errorlevel%
-)
-
-IF NOT EXIST build.fsx (
-  .paket\paket.exe update
-  packages\FAKE\tools\FAKE.exe init.fsx
+if not exist packages\FAKE\tools\Fake.exe (
+  nuget install FAKE -OutputDirectory packages -ExcludeVersion
 )
-packages\FAKE\tools\FAKE.exe build.fsx %*
+packages\FAKE\tools\FAKE.exe build.fsx %*