Update instructions for multiple SignalR hubs
Update instructions for multiple SignalR hubs

aspnetboilerplate/aspnetboilerplate,carldai0106/aspnetboilerplate,zclmoon/aspnetboilerplate,ryancyq/aspnetboilerplate,ryancyq/aspnetboilerplate,fengyeju/aspnetboilerplate,virtualcca/aspnetboilerplate,luchaoshuai/aspnetboilerplate,Nongzhsh/aspnetboilerplate,beratcarsi/aspnetboilerplate,AlexGeller/aspnetboilerplate,verdentk/aspnetboilerplate,beratcarsi/aspnetboilerplate,andmattia/aspnetboilerplate,zclmoon/aspnetboilerplate,andmattia/aspnetboilerplate,carldai0106/aspnetboilerplate,verdentk/aspnetboilerplate,AlexGeller/aspnetboilerplate,virtualcca/aspnetboilerplate,fengyeju/aspnetboilerplate,ilyhacker/aspnetboilerplate,ilyhacker/aspnetboilerplate,virtualcca/aspnetboilerplate,zclmoon/aspnetboilerplate,ryancyq/aspnetboilerplate,ryancyq/aspnetboilerplate,ilyhacker/aspnetboilerplate,verdentk/aspnetboilerplate,beratcarsi/aspnetboilerplate,carldai0106/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate,luchaoshuai/aspnetboilerplate,andmattia/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate,Nongzhsh/aspnetboilerplate,fengyeju/aspnetboilerplate,carldai0106/aspnetboilerplate,Nongzhsh/aspnetboilerplate,AlexGeller/aspnetboilerplate,aspnetboilerplate/aspnetboilerplate