Merge pull request #31 from zooba/build-fix

Adds missing import.

VSTestHost/VSTestHost.csproj

@@ -141,6 +141,7 @@
     <Content Include="Resources\Package.ico" />
     <None Include="source.extension.vsixmanifest" />
   </ItemGroup>
+  <Import Project="$(TargetsPath)\Common.Build.targets" />
   <Import Project="$(TargetsPath)\Common.Build.CSharp.targets" />
   <Import Project="$(VSToolsPath)\VSSDK\Microsoft.VsSDK.targets" Condition="'$(VSToolsPath)' != ''" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it.