Converted vsix project to .NET 4.6

Author: madskristensen

src/WebCompilerVsix/WebCompilerVsix.csproj

@@ -21,7 +21,7 @@
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>WebCompilerVsix</RootNamespace>
     <AssemblyName>WebCompilerVsix</AssemblyName>
-    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.6</TargetFrameworkVersion>
     <GeneratePkgDefFile>true</GeneratePkgDefFile>
     <IncludeAssemblyInVSIXContainer>true</IncludeAssemblyInVSIXContainer>
     <IncludeDebugSymbolsInVSIXContainer>true</IncludeDebugSymbolsInVSIXContainer>