upgrade to EF6
- update to EF6
update entities
update package
- convert to nunit
Merge branch 'master' of https://github.com/loresoft/EntityFramework.Extended

Conflicts:
	Source/EntityFramework.Extended/Batch/SqlServerBatchRunner.cs
	Source/Samples/net40/Tracker.SqlCompact.Entities/Tracker.edmx
	Source/Samples/net40/Tracker.SqlServer.CodeFirst/Entity.csp
	Source/Samples/net40/Tracker.SqlServer.Entities/Tracker.edmx
	Source/Samples/net45/Tracker.SqlServer.Test/BatchDbContext.cs
	Source/Samples/net45/Tracker.SqlServer.Test/BatchObjectContext.cs