VS version 16 supported

Author: VioletGiraffe

CPPCheckPlugin/CPPCheckPlugin.csproj

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003" ToolsVersion="12.0">
   <PropertyGroup>
-    <MinimumVisualStudioVersion>14.0</MinimumVisualStudioVersion>
+    <MinimumVisualStudioVersion>15.0</MinimumVisualStudioVersion>
     <VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">11.0</VisualStudioVersion>
     <VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
     <FileUpgradeFlags>