Add note about work in progress going on in features/migration-dotnet3
Add note about work in progress going on in features/migration-dotnet3

albertodall/eShopOnContainers,dotnet-architecture/eShopOnContainers,albertodall/eShopOnContainers,skynode/eShopOnContainers,albertodall/eShopOnContainers,dotnet-architecture/eShopOnContainers,albertodall/eShopOnContainers,dotnet-architecture/eShopOnContainers,skynode/eShopOnContainers,albertodall/eShopOnContainers,dotnet-architecture/eShopOnContainers,skynode/eShopOnContainers,dotnet-architecture/eShopOnContainers,skynode/eShopOnContainers,skynode/eShopOnContainers