title: TypeScriptOutFile on CompileTypeScript target in msbuild project
body: <p>I want to have a combined js file from typescript sources on build. My *.csproj file:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003"&gt;
  
    &lt;Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\TypeScript\Microsoft.TypeScript.Default.props" /&gt;
    &lt;Import Project="$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\TypeScript\Microsoft.TypeScript.targets" /&gt;
  
    &lt;PropertyGroup&gt;
      &lt;Configuration Condition=" '$(Configuration)' == '' "&gt;Debug&lt;/Configuration&gt;
      &lt;ProjectGuid&gt;{83A2324A-201F-4CE8-A57B-16770214E3B2}&lt;/ProjectGuid&gt;
      &lt;TypeScriptToolsVersion&gt;1.4&lt;/TypeScriptToolsVersion&gt;
      &lt;VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''"&gt;12.0&lt;/VisualStudioVersion&gt;
      &lt;TypeScriptCompileOnSaveEnabled&gt;False&lt;/TypeScriptCompileOnSaveEnabled&gt;
      &lt;TypeScriptOutFile&gt;..\bin\app.js&lt;/TypeScriptOutFile&gt;
      &lt;TypeScriptSourceMap&gt;true&lt;/TypeScriptSourceMap&gt;
    &lt;/PropertyGroup&gt;
  
    &lt;ItemGroup&gt;
      &lt;TypeScriptCompile Include="src\TypeScriptCompilerPlugin.ts" /&gt;
    &lt;/ItemGroup&gt;
  
    &lt;Target Name="Build" DependsOnTargets="CompileTypeScript"&gt;
    &lt;/Target&gt;
  
  &lt;/Project&gt;
  </code></pre>
  
  <p>The problem: on build VS generate file src\TypeScriptCompilerPlugin.js, not ..\bin\app.js...</p>