In post build event if Visualizers folder not exist then create it,

Don't copy Microsoft.VisualStudio.DebuggerVisualizers on build

ImageVisualizer.sln

@@ -1,7 +1,7 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2013
-VisualStudioVersion = 12.0.21005.1
+# Visual Studio 14
+VisualStudioVersion = 14.0.25123.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ImageVisualizer", "ImageVisualizer\ImageVisualizer.csproj", "{BC6125AC-4702-4D3A-A6E3-15C9E0FBA3EF}"
 EndProject

ImageVisualizer/ImageVisualizer.csproj

@@ -35,7 +35,9 @@
     <StartupObject />
   </PropertyGroup>
   <ItemGroup>
-    <Reference Include="Microsoft.VisualStudio.DebuggerVisualizers, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL" />
+    <Reference Include="Microsoft.VisualStudio.DebuggerVisualizers, Version=14.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a, processorArchitecture=MSIL">
+      <Private>False</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
     <Reference Include="System.Drawing" />
@@ -78,7 +80,14 @@
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
-    <PostBuildEvent>copy /Y "$(TargetPath)" "%25USERPROFILE%25\Documents\Visual Studio 2015\Visualizers\$(TargetFileName)"</PostBuildEvent>
+    <PostBuildEvent>set vs_path=%25USERPROFILE%25\Documents\Visual Studio 2015
+set visualizers_path=%25vs_path%25\Visualizers
+if exist "%25vs_path%25" (
+    if not exist "%25visualizers_path%25" (
+        md "%25visualizers_path%25"
+    )
+    copy /y "$(TargetPath)" "%25visualizers_path%25"
+)</PostBuildEvent>
   </PropertyGroup>
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.

README.md

@@ -27,6 +27,6 @@ This will open Image Visualizer window which will allow you to preview image. In
 
 2. Post build event of Visual Studio will copy `ImageVisualizer.dll` file to `%USERPROFILE%\Documents\Visual Studio 2015\Visualizers` folder automatically. If you are not using Visual Studio 2015 then manually copy `ImageVisualizer.dll` file to appropriate folder.
 
-## Credits:
+## Credits
 
-Icons: [Fugue Icons](http://p.yusukekamiyamane.com)
+Icons: [Fugue Icons](http://p.yusukekamiyamane.com)