updated ignores
Included SQLite, Simple.Data.SQLite and FluentMigrator

Created PoS.Data, PoS.Entities and PoS.Services projects

Moved entities from PoS/Entities to PoS.Entities

updated README
Added a migration for 'Configurations' table
Added Categories and Customers to database schema
change property name
updated ignores
updated README
Implemented ValidatePassword for User
added background and icon files to a Resources folder in the root
added seed data to database schema
implemented UsersService, added Simple.Data references
implemented basic functionalilty for main MDI form, Login Form acomplished