Update README.md

Author: hikalkan

README.md

@@ -5,8 +5,8 @@ using ASP.NET Core and EntityFramework Core.
 
 ## Prerequirements
 
-* Visual Studio 2015
-* ASP.NET Core RC2 (Download here: https://go.microsoft.com/fwlink/?LinkId=798481)
+* Visual Studio 2015 (Install Update3 if not installed: https://www.visualstudio.com/news/releasenotes/vs2015-update3-vs)
+* ASP.NET Core (Install here: https://go.microsoft.com/fwlink/?LinkId=817245)
 * SQL Server
 
 ## How To Run