updated build instructions
updated build instructions

akkadotnet/Akka.Persistence.PostgreSql,akkadotnet/Akka.Persistence.PostgreSql,Aaronontheweb/Akka.Persistence.PostgreSql,alexvaluyskiy/Akka.Persistence.PostgreSql,Aaronontheweb/Akka.Persistence.PostgreSql,alexvaluyskiy/Akka.Persistence.PostgreSql