Add package README for NuGet (#89)

Author: Mark Whitaker

RegexToolbox.NET.sln

@@ -9,6 +9,9 @@ ProjectSection(SolutionItems) = preProject
 	.gitignore = .gitignore
 	LICENSE = LICENSE
 	README.md = README.md
+	.github\dependabot.yml = .github\dependabot.yml
+	.github\workflows\publish-to-nuget.yml = .github\workflows\publish-to-nuget.yml
+	.github\workflows\build-and-test.yml = .github\workflows\build-and-test.yml
 EndProjectSection
 EndProject
 Global

RegexToolbox/RegexToolbox.csproj

@@ -14,10 +14,12 @@
         <Repository>https://github.com/markwhitaker/RegexToolbox.NET</Repository>
         <RepositoryType>Git</RepositoryType>
         <Company>Mainwave</Company>
+        <PackageReadmeFile>README.md</PackageReadmeFile>
     </PropertyGroup>
 
     <ItemGroup>
         <None Include="icon\RegexToolbox-icon-128.png" Pack="true" PackagePath="\" />
+        <None Include="..\README.md" Pack="true" PackagePath="\" />
     </ItemGroup>
 
     <ItemGroup>