Add Supported-list in supported section (#18)

* Update README

* Add Support-list

* Add Supported-list in supported section

README.md

@@ -9,8 +9,9 @@ SkyWalking C#/.NET instrument agent
 
 [![Build status](https://ci.appveyor.com/api/projects/status/fl6vucwfn1vu94dv/branch/master?svg=true)](https://ci.appveyor.com/project/wu-sheng/skywalking-csharp/branch/master)
 
-# Supported .NET versions
-This project currently supports apps targeting netstandard2.0 or higher.
+# Supported
+- This project currently supports apps targeting netstandard2.0 or higher.
+- [Supported middlewares, frameworks and libraries.](docs/Supported-list.md)
 
 # Features
 A quick list of SkyWalking .NET Core Agent's capabilities
@@ -50,10 +51,11 @@ public void ConfigureServices(IServiceCollection services)
     services.AddSkyWalking(option =>
     {
         // Application code is showed in sky-walking-ui
-        option.DirectServers = "localhost:11800";
+        option.ApplicationCode = "Your_ApplicationName";
 
         //Collector agent_gRPC/grpc service addresses.
-        option.ApplicationCode = "Your_ApplicationName";
+        option.DirectServers = "localhost:11800";
+        
     });
 }
 ```

docs/Supported-list.md

+* Web Framework
+    * [ASP.NET Core](https://github.com/aspnet)
+* HttpClient
+    * [HttpClientFactory](https://github.com/aspnet/HttpClientFactory)
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