A new preview of Dynamic Data Provider and EntityDataSource control for EF6 has been released. Please check this out, it worked for me.
To register the provider:
MetaModel model = new MetaModel();
model.RegisterContext(
new Microsoft.AspNet.DynamicData.ModelProviders.EFDataModelProvider(
() => new KiwiJuiceEntities()
),
new ContextConfiguration() { ScaffoldAllTables = true }
);