Removed .NET Core Compatibility note for SignalR

Author: ismcagdas

docs/en/Development-Guide-Core.md

@@ -873,11 +873,6 @@ All notifications of user are listed in this page.
 
 <img src="images/notifications-list-core-3.png" alt="Notification list" class="img-thumbnail" />
 
-**.NET Core Compatibility**
-
-Since SignalR is not ready yet for .NET Core, real time notifications
-will not work if you select .NET Core as your base framework.
-
 #### Chat
 
 Chat icon is located next to user's profile image on top right corner of
@@ -939,11 +934,6 @@ online users and unread message count from each friend.
 friends cache up to date. In order to do that, it watches some events of
 Friendship and ChatMessage entities.
 
-**.NET Core Compatibility**
-
-Since SignalR is not ready yet for .NET Core, chat feature will not work
-if you select .NET Core as your base framework.
-
 ##### Chat Features
 
 <img src="images/chat-features-1.png" alt="User menu" class="img-thumbnail" />
@@ -1381,11 +1371,6 @@ use SignalR in the application. See [SignalR
 integration](https://aspnetboilerplate.com/Pages/Documents/SignalR-Integration)
 document for more information on SignalR.
 
-**.NET Core Compatibility**
-
-Since SignalR is not ready yet for .NET Core, SignalR integration is
-disabled if you select .NET Core as your base framework.
-
 #### Logging
 
 ASP.NET Zero uses **Log4Net** for logging as default. Configuration is