A bit of cleanup

Merge branch 'master' of https://github.com/koenbeuk/EntityFrameworkCore.BookStoreSampleApp

Updated to latest

Create dotnet.yml

Removed dependency on triggered.aspnetcore

Merge branch 'master' of https://github.com/koenbeuk/EntityFrameworkCore.BookStoreSampleApp into master

Updated to latest stable triggers dependency version

Update README.md

Fixed CreateEmail bug

Enforced custom emails relationship

Fixed bug in Triggered version

Delete and ignore created test db's from git

Add project files.

Add .gitignore and .gitattributes.