Async quick start

• Install .NET Core SDK 2.0.0 or later.
• In a console:

  mkdir targets
  cd targets
  dotnet new console
  dotnet add package Bullseye -v 1.0.0-alpha0002

• Add to targets.csproj:

  <PropertyGroup>
    <LangVersion>latest</LangVersion>
  </PropertyGroup>

• Replace Program.cs:

  using System.Threading.Tasks;
  using static Bullseye.Targets;
  
  class Program
  {
      static async Task<int> Main(string[] args)
      {
          Add("default", () => System.Console.Out.WriteLineAsync("Hello, world!"));
          return await RunAsync(args);
      }
  }

• In a console:

  dotnet run

  
• For help:

  dotnet run -- --help