Update "How to build" in readme.

ICSharpCode.Decompiler.Tests/Helpers/Tester.cs

@@ -183,7 +183,7 @@ namespace ICSharpCode.Decompiler.Tests.Helpers
 
 		static readonly Lazy<IEnumerable<MetadataReference>> defaultReferences = new Lazy<IEnumerable<MetadataReference>>(delegate {
 			string refAsmPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ProgramFilesX86),
-				@"Reference Assemblies\Microsoft\Framework\.NETFramework\v4.5");
+				@"Reference Assemblies\Microsoft\Framework\.NETFramework\v4.6.2");
 			string thisAsmPath = Path.GetDirectoryName(typeof(Tester).Assembly.Location);
 			return new[]
 			{

README.md

@@ -47,16 +47,23 @@ How to build
 ------------
 
 Windows:
-- Check out the repository using git.
-- Execute `git submodule update --init --recursive` to get all required submodules.
-- Use ILSpy.sln to work.
-
-(Optional, Windows-only) Note: If you want to use the same build configuration as the build server, you will have to install `VC++ 2017 version 15.7 v14.14 latest v141 tools` (or similar) from the "Individual components" section in the Visual Studio Setup. We use `editbin.exe` to modify the stack size used by ILSpy.exe from 1MB to 16MB, because the decompiler makes heavy use of recursion, where small stack sizes lead to problems in very complex methods.
+- Install Visual Studio (minimum version: 2017.7) with the following components:
+  - Workload ".NET Desktop Development"
+  - .NET Framework 4.6.2 Targeting Pack (if the VS installer does not offer this option, install the [.NET 4.6.2 developer pack](https://www.microsoft.com/en-us/download/details.aspx?id=53321) separately)
+  - Individual Component "VC++ 2017 version 15.9 v14.16 latest v141 tools" (or similar)
+    - The VC++ toolset is optional; if present it is used for `editbin.exe` to modify the stack size used by ILSpy.exe from 1MB to 16MB, because the decompiler makes heavy use of recursion, where small stack sizes lead to problems in very complex methods.
+- Install the [.NET Core SDK 2.2](https://dotnet.microsoft.com/download)
+- Check out the ILSpy repository using git.
+- Execute `git submodule update --init --recursive` to download the ILSpy-Tests submodule (used by some test cases).
+- Open ILSpy.sln in Visual Studio.
+  - NuGet package restore will automatically download further dependencies
+  - Run project "ILSpy" for the ILSpy UI
+  - Use the Visual Studio "Test Explorer" to see/run the tests
 
 Unix:
 - Make sure .NET Core 2.2 is installed (you can get it here: https://get.dot.net).
 - Check out the repository using git.
-- Execute `git submodule update --init --recursive` to get all required submodules.
+- Execute `git submodule update --init --recursive` to download the ILSpy-Tests submodule (used by some test cases).
 - Use `dotnet build Frontends.sln` to build the non-Windows flavors of ILSpy (cli and powershell core).
 
 (Visual Studio for Mac users only:)