Fix SQLDB migration issue

Author: cephalin

Migrations/20170901142627_Initial.cs

@@ -1,5 +1,6 @@
-using System;
+using System;
 using System.Collections.Generic;
+using Microsoft.EntityFrameworkCore.Metadata;
 using Microsoft.EntityFrameworkCore.Migrations;
 
 namespace DotNetCoreSqlDb.Migrations
@@ -13,7 +14,8 @@ protected override void Up(MigrationBuilder migrationBuilder)
                 columns: table => new
                 {
                     ID = table.Column<int>(nullable: false)
-                        .Annotation("Sqlite:Autoincrement", true),
+                        .Annotation("Sqlite:Autoincrement", true)
+                        .Annotation("SqlServer:ValueGenerationStrategy", SqlServerValueGenerationStrategy.IdentityColumn),
                     CreatedDate = table.Column<DateTime>(nullable: false),
                     Description = table.Column<string>(nullable: true)
                 },