[Blowdart.UI] Hello, World

Demo.csproj

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <TargetFramework>netcoreapp3.0</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Blowdart.UI.Web" Version="0.0.3-pre" />
  </ItemGroup>

</Project>

Program.cs

using Blowdart.UI.Web;

namespace Blowdart.UI.Demo
{
    public class Program
    {
        public static void Main(string[] args) => UiServer.Start(args, builder =>
        {
            builder.AddPage("/", ui =>
            {
                ui.Header(1, "Hello, world!");
                ui.Literal("Welcome to your new app.");
            });
        });
    }
}