HelpPageConfig modified for integration tests.

HelpPageConfig.cs

public static class HelpPageConfig
{
  public static void Register(HttpConfiguration config)
  {
    var path = HostingEnvironment.MapPath("~/App_Data/XmlDocument.xml");
    if (!string.IsNullOrWhiteSpace(path))
    {
      config.SetDocumentationProvider(
      new XmlDocumentationProvider(path));
    }
  }
}