Interface-based protocols.
Merge pull request #1 from digitalcreations/master

Support Azure Blob Storage for uploads
Merge branch 'dev-protocol-interface' of git://github.com/digitalcreations/NBug into digitalcreations-dev-protocol-interface

Conflicts:
	NBug/Core/Submission/Dispatcher.cs
Enables Nuget package restore.
Azure blob storage based on IProtocol.

Separated into external project so NBug does not require a dependency on
the Windows Azure tools.