Feature Enhancement: Add Context for SqlConnection so API is similar to using the EF DB context.

[dibley1973]

A desirable feature would be for the API to be enhanced to allow the stored procedures to be called when not using EF in the same way as they can be when the EF context is used. This would assist in consumers of the framework being able to call the stored procedures in a similar way as they may call and use DBSet in EF. This API is already present in the 'Dibware.StoredProcedureFrameworkForEF' but not yet in 'Dibware.StoredProcedureFramework' core.

[dibley1973]

I have branched an investigated but it looks like the only way to achieve neatly will be to break the existing API, so may leave this issue open until there are enough new features or enhancements requested that make breaking the existing API worth while and a 2.0 release feasable.