Adding support to provide custom client handler. This will be used to support Nancy testing,
created nuget spec files and updated Assembly info for the spec files.
refactored response object to include ability to get details about returned content.

Added integration spec tests using Nancy as the web server.
Added batch file to automatically create nuget packages and push to OneDrive
Merge branch 'master' of https://github.com/dotnetprofessional/xpf.git