Build with VS17

Author: oledid

.appveyor.yml

@@ -1,4 +1,5 @@
 version: 1.4.3.{build}
+image: Visual Studio 2017
 skip_non_tags: false
 configuration: Release
 init:

xslt-cli.sln

@@ -1,13 +1,13 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 14
-VisualStudioVersion = 14.0.25420.1
+# Visual Studio 15
+VisualStudioVersion = 15.0.27130.2036
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{D63F7197-2D90-4A61-8F87-E85B8730ED5A}"
 	ProjectSection(SolutionItems) = preProject
+		.appveyor.yml = .appveyor.yml
 		.editorconfig = .editorconfig
 		.gitignore = .gitignore
-		appveyor.yml = appveyor.yml
 		LICENSE = LICENSE
 		README.md = README.md
 	EndProjectSection
@@ -34,4 +34,7 @@ Global
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {2D060838-354A-4CAB-82D3-F95B4AC7F6B4}
+	EndGlobalSection
 EndGlobal