Document inclusion of SL v2 in readme

This comes from the bump to ThisAssembly.Constants 2.0.6, which now considers GitInfo as a direct reference and will trigger the in-IDE requirement of sponsorship (direct, indirect or implicit).

readme.md

@@ -11,14 +11,16 @@ Git Info from MSBuild, C# and VB
 [![License](https://img.shields.io/:license-MIT-blue.svg)](https://opensource.org/licenses/mit-license.php)
 [![Build status](https://ci.appveyor.com/api/projects/status/p9e5xdd86vnfe0q8?svg=true)](https://ci.appveyor.com/project/MobileEssentials/gitinfo)
 
-## Usage
-
-After installing via [NuGet](https://www.nuget.org/packages/GitInfo):
+Install via [NuGet](https://www.nuget.org/packages/GitInfo):
 
 ```pwsh
 PM> Install-Package GitInfo
 ```
 
+<!-- include https://github.com/devlooped/.github/raw/main/sponsorlinkr.md -->
+
+## Usage
+<!-- #content -->
 By default, if the containing project is a C#, F# or VB project, a compile-time generated
 source file will contain all the git information and can be accessed from anywhere within
 the assembly, as constants in a `ThisAssembly` (partial) class and its nested `Git` static class:
@@ -105,8 +107,7 @@ VB:
 > the relevant properties to false: `GenerateAssemblyVersionAttribute`,
 > `GenerateAssemblyFileVersionAttribute` and `GenerateAssemblyInformationalVersionAttribute`.
 
-
-MSBuild:
+You can also just build your own versioning logic in a target that depends on GitInfo using plain MSBuild:
 
 ```xml
 <PropertyGroup>
@@ -255,7 +256,7 @@ to customize the behavior:
   included in the [NuGet package](https://www.nuget.org/packages/GitInfo)
 - 100% incremental build-friendly and high-performing (all proper Inputs/Outputs in place, smart caching of Git info, etc.)
 
-
+<!-- #content -->
 <!-- include https://github.com/devlooped/sponsors/raw/main/footer.md -->
 # Sponsors 
 

src/Directory.targets

@@ -1,5 +1,14 @@
 <Project InitialTargets="SetLocalVersion">
 
+  <PropertyGroup>
+    <Description>
+      $(Description)
+
+      > This project uses SponsorLink to attribute sponsor status (direct, indirect or implicit). For IDE usage, sponsor status is required.
+      > IDE-only warnings will be emitted after a grace period otherwise. Learn more at https://github.com/devlooped#sponsorlink.
+    </Description>
+  </PropertyGroup>
+
   <Target Name="SetLocalVersion" Condition="!$(CI)">
     <GetVersion>
       <Output TaskParameter="Version" PropertyName="Version" />

src/GitInfo/GitInfo.msbuildproj

@@ -12,12 +12,11 @@
   <ItemGroup>
     <PackageReference Include="NuGetizer" Version="1.2.3" />
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="all" />
-    <PackageReference Include="ThisAssembly.Constants" Version="2.0.5" Pack="true" TargetFramework="netstandard2.0" />
+    <PackageReference Include="ThisAssembly.Constants" Version="2.0.6" Pack="true" TargetFramework="netstandard2.0" />
   </ItemGroup>
   <ItemGroup>
     <None Include="build/**/*.*" />
     <None Include="buildMultiTargeting/**/*.*" />
     <None Include="buildTransitive/**/*.*" />
-    <None Include="..\..\readme.md" PackagePath="readme.md" />
   </ItemGroup>
 </Project>

src/GitInfo/readme.md

@@ -0,0 +1,5 @@
+<!-- include https://github.com/devlooped/.github/raw/main/sponsorlinkr.md -->
+<!-- include ../../readme.md#content -->
+<!-- include https://github.com/devlooped/sponsors/raw/main/footer.md -->
+<!-- prevent expansion via CI markdown includes -->
+<!-- exclude -->