Add nuget README and remove ort lib references from props (#409)

* Add nuget README and remove ort lib references from props

* replace commit id in nuspec dynamically

* remove $ sign for commit id token

---------

Co-authored-by: Sayan Shaw <sayanshaw@microsoft.com>
Co-authored-by: Wenbing Li <10278425+wenbingl@users.noreply.github.com>

.pipelines/nuget.yml

@@ -66,6 +66,14 @@ stages:
         DisplayName: 'Sign DLL'
         DoEsrp: 'true'
 
+    - task: PowerShell@2
+      displayName: Replace commit id token in nuspec
+      inputs:
+        targetType: 'inline'
+        script: |
+          (Get-Content NativeNuget.nuspec) -replace 'COMMIT_ID', '$(Build.SourceVersion)' | Set-Content NativeNuget.nuspec
+        workingDirectory: '$(Build.SourcesDirectory)/nuget'
+
     - task: NuGetToolInstaller@0
       displayName: Use Nuget 6.2.1
       inputs:

nuget/NativeNuget.nuspec

@@ -25,12 +25,14 @@
 	<tags>ONNX ONNXRuntime AI Machine Learning</tags>
 	<icon>ORT_icon_for_light_bg.png</icon>
 	<license type="file">LICENSE.txt</license>
+	<readme>README.md</readme>
 	<projectUrl>https://github.com/Microsoft/onnxruntime-extensions</projectUrl>
-	<repository type="git" url="https://github.com/Microsoft/onnxruntime-extensions.git" commit="94142d8391c9791ec71c38336436319a2d4ac7a0"/>
+	<repository type="git" url="https://github.com/Microsoft/onnxruntime-extensions.git" commit="COMMIT_ID"/>
 	</metadata>
 	<!-- assemble files in the /nuget directory and run nuget pack from -->
 	<files>
 		<file src="LICENSE.txt" target="LICENSE.txt" />
+		<file src="README.md" target="README.md" />
 		<!-- Windows, Linux, macOS via netstandard -->
 		<file src="..\out\Windows\bin\RelWithDebInfo\ortextensions.dll" target="runtimes\win-x64\native" />
 		<file src="targets\netstandard\Microsoft.ML.OnnxRuntime.Extensions.props" target="build\native" />

nuget/README.md

@@ -0,0 +1,3 @@
+# OnnxRuntime.Extensions NuGet Package
+
+[ONNX Runtime Extensions](https://github.com/microsoft/onnxruntime-extensions) is a library of custom ONNX operators used for pre and post processing ONNX models.

nuget/targets/netstandard/Microsoft.ML.OnnxRuntime.Extensions.props

@@ -1,17 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-
-  <ItemDefinitionGroup Condition="'$(PlatformTarget)' == 'x64' OR ('$(PlatformTarget)' == 'AnyCPU' AND '$(Prefer32Bit)' != 'true')">
-	<Link>
-	  <AdditionalDependencies>$(MSBuildThisFileDirectory)../../runtimes/win-x64/native/onnxruntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
-	</Link>
-  </ItemDefinitionGroup>
-
-  <ItemDefinitionGroup Condition="'$(PlatformTarget)' == 'x86' OR ('$(PlatformTarget)' == 'AnyCPU' AND '$(Prefer32Bit)' == 'true')">
-	<Link>
-	  <AdditionalDependencies>$(MSBuildThisFileDirectory)../../runtimes/win-x86/native/onnxruntime.lib;%(AdditionalDependencies)</AdditionalDependencies>
-	</Link>
-  </ItemDefinitionGroup>
 	
   <PropertyGroup>
     <EnginePlatform Condition="'$(Platform)' == 'Win32'">x86</EnginePlatform>