Modified Octokit project to run custom build task that pulls down

interface comments to implementations.

Octokit/Octokit.csproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <UsingTask TaskName="PullDownComments" AssemblyFile="..\tools\CustomBuildTasks\CustomBuildTasks.dll" />
   <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
@@ -263,9 +264,11 @@
   <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <!-- 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.
+       Other similar extension points exist, see Microsoft.Common.targets. -->
   <Target Name="BeforeBuild">
+  	<PullDownComments />
   </Target>
+  <!--
   <Target Name="AfterBuild">
   </Target>
   -->