Package README.md to NuGet (#645)

+semver:patch

Author: hazzik

.editorconfig

@@ -32,3 +32,11 @@ indent_size = 4
 [*.js]
 indent_style = tab
 indent_size = 2
+
+[*.csproj]
+indent_style = space
+indent_size = 2
+
+[*.props]
+indent_style = space
+indent_size = 2

src/Directory.Build.props

@@ -1,5 +1,4 @@
 <Project>
-
   <PropertyGroup>
     <Copyright>Copyright (c) James Gregory and contributors (Paul Batum, Hudson Akridge, Gleb Chermennov, Jorge Rodríguez Galán).</Copyright>
     <Authors>James Gregory and contributors (Paul Batum, Hudson Akridge, Gleb Chermennov, Jorge Rodríguez Galán).</Authors>
@@ -10,6 +9,7 @@
     <PackageIcon>logo-nuget.png</PackageIcon>
     <PackageProjectUrl>https://github.com/nhibernate/fluent-nhibernate</PackageProjectUrl>
     <PackageTags>ORM;DAL;NHibernate;Fluent;Conventions;DataBase;ADO.Net;Mappings</PackageTags>
+    <PackageReadmeFile>README.md</PackageReadmeFile>
     <AssembyDescription></AssembyDescription>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
     <IncludeSymbols>true</IncludeSymbols>
@@ -26,10 +26,10 @@
   <ItemGroup Condition="'$(IsPackable)' == 'true'">
     <None Include="$(MSBuildThisFileDirectory)../docs/logo-nuget.png" Pack="true" PackagePath="/"/>
     <None Include="$(MSBuildThisFileDirectory)../LICENSE" Pack="true" PackagePath="/"/>
+    <None Include="$(MSBuildThisFileDirectory)../README.md" Pack="true" PackagePath="/"/>
   </ItemGroup>
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All"/>
   </ItemGroup>
-
 </Project>