update plugin readme, include in nupkg

Author: JohnTheGr8

Flow.Launcher.Plugin/Flow.Launcher.Plugin.csproj

@@ -26,6 +26,7 @@
     <PackageTags>flowlauncher</PackageTags>
     <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
     <PublishRepositoryUrl>true</PublishRepositoryUrl>
+    <PackageReadmeFile>Readme.md</PackageReadmeFile>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(APPVEYOR)' == 'True'">
@@ -56,7 +57,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <None Include="README.md" />
+    <None Include="Readme.md" Pack="true" PackagePath="\"/>
     <None Include="FodyWeavers.xml" />
   </ItemGroup>
 

Flow.Launcher.Plugin/README.md

@@ -1,6 +1,7 @@
-What does Flow.Launcher.Plugin do?
-====
+Reference this package to develop a plugin for [Flow Launcher](https://github.com/Flow-Launcher/Flow.Launcher).
 
-* Defines base objects and interfaces for plugins
-* Plugin authors making C# plugins should reference this DLL via nuget
-* Contains commands and models that can be used by plugins
+Useful links:
+
+* [General plugin development guide](https://www.flowlauncher.com/docs/#/plugin-dev)
+* [.Net plugin development guide](https://www.flowlauncher.com/docs/#/develop-dotnet-plugins)
+* [Package API Reference](https://www.flowlauncher.com/docs/#/API-Reference/Flow.Launcher.Plugin)