update samples

Author: jonsequitur

samples/tutorial/src/Binding/Binding.csproj

@@ -2,12 +2,12 @@
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
-    <TargetFramework>netcoreapp3.0</TargetFramework>
+    <TargetFramework>netcoreapp3.1</TargetFramework>
     <LangVersion>preview</LangVersion>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="System.CommandLine.DragonFruit" Version="0.2.0-alpha.19165.1" />
+    <PackageReference Include="System.CommandLine.DragonFruit" Version="0.3.0-alpha.20070.2" />
   </ItemGroup>
 
 </Project>

samples/tutorial/src/Binding/Formatter.cs

@@ -2,7 +2,7 @@
 // Licensed under the MIT license. See LICENSE file in the project root for full license information.
 
 using System;
-using System.CommandLine;
+using System.CommandLine.Parsing;
 using System.IO;
 using System.Linq;
 using System.Reflection;

samples/tutorial/src/Binding/GetValueSample.cs

@@ -3,6 +3,7 @@
 
 using System;
 using System.CommandLine;
+using System.CommandLine.Parsing;
 using static Binding.Formatter;
 
 namespace Binding

samples/tutorial/src/Binding/HandlerBindingSample.cs

@@ -4,8 +4,9 @@
 using System;
 using System.Collections.Generic;
 using System.CommandLine;
-using System.CommandLine.Builder;
 using System.CommandLine.Invocation;
+using System.CommandLine.IO;
+using System.CommandLine.Parsing;
 using System.IO;
 using System.Threading.Tasks;
 using static Binding.Formatter;