update readme

Author: xljiulang

README.md

@@ -9,6 +9,8 @@
 | WebApiClientCore | 基础包 | [![NuGet](https://buildstats.info/nuget/WebApiClientCore)](https://www.nuget.org/packages/WebApiClientCore) |
 | WebApiClientCore.Extensions.OAuths | OAuth扩展包 | [![NuGet](https://buildstats.info/nuget/WebApiClientCore.Extensions.OAuths)](https://www.nuget.org/packages/WebApiClientCore.Extensions.OAuths) |
 | WebApiClientCore.Extensions.NewtonsoftJson | Json.Net扩展包 | [![NuGet](https://buildstats.info/nuget/WebApiClientCore.Extensions.NewtonsoftJson)](https://www.nuget.org/packages/WebApiClientCore.Extensions.NewtonsoftJson) |
+| WebApiClientCore.Extensions.JsonRpc | JsonRpc调用扩展包 | [![NuGet](https://buildstats.info/nuget/WebApiClientCore.Extensions.JsonRpc)](https://www.nuget.org/packages/WebApiClientCore.Extensions.JsonRpc) |
+| WebApiClientCore.OpenApi.SourceGenerator | 将本地或远程OpenApi文档解析生成WebApiClientCore接口代码的dotnet tool | [![NuGet](https://buildstats.info/nuget/WebApiClientCore.OpenApi.SourceGenerator)](https://www.nuget.org/packages/WebApiClientCore.OpenApi.SourceGenerator) |
 
 ### 如何使用
 
@@ -987,3 +989,29 @@ public interface IUserApi
     Task PostAsync([JsonNetContent] User user);
 }
 ```
+
+
+### JsonRpc调用
+在极少数场景中，开发者可能遇到JsonRpc调用的接口，由于该协议不是很流行，WebApiClientCore将该功能的支持作为WebApiClientCore.Extensions.JsonRpc扩展包提供。使用[JsonRpcMethod]修饰Rpc方法，使用[JsonRpcParam]修饰Rpc参数
+即可。
+
+#### JsonRpc声明
+```c#
+[HttpHost("http://localhost:5000/jsonrpc")]
+public interface IUserApi 
+{
+    [JsonRpcMethod("add")]
+    ITask<JsonRpcResult<User>> AddAsync([JsonRpcParam] string name, [JsonRpcParam] int age, CancellationToken token = default);
+}
+```
+
+#### JsonRpc数据包
+```
+POST /jsonrpc HTTP/1.1
+Host: localhost:5000
+User-Agent: WebApiClientCore/1.0.6.0
+Accept: application/json; q=0.01, application/xml; q=0.01
+Content-Type: application/json-rpc
+
+{"jsonrpc":"2.0","method":"add","params":["laojiu",18],"id":1}
+```