Added dotnetopenauth.proj to build sln file.

Author: AArnott

src/DotNetOpenAuth.BuildTasks/DotNetOpenAuth.BuildTasks.sln

@@ -10,6 +10,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		..\..\lib\DotNetOpenAuth.BuildTasks.targets = ..\..\lib\DotNetOpenAuth.BuildTasks.targets
 		..\..\tools\DotNetOpenAuth.Common.Settings.targets = ..\..\tools\DotNetOpenAuth.Common.Settings.targets
 		..\..\nuget\DotNetOpenAuth.nuspec = ..\..\nuget\DotNetOpenAuth.nuspec
+		..\DotNetOpenAuth\DotNetOpenAuth.proj = ..\DotNetOpenAuth\DotNetOpenAuth.proj
 		..\..\tools\DotNetOpenAuth.props = ..\..\tools\DotNetOpenAuth.props
 		..\..\tools\DotNetOpenAuth.targets = ..\..\tools\DotNetOpenAuth.targets
 		..\..\tools\DotNetOpenAuth.Versioning.targets = ..\..\tools\DotNetOpenAuth.Versioning.targets