Fix AspNetCore README (#170)

* Use Cache-Control: no-store

* Fix AspNetCore README

* remove and sort

Author: halter73

src/ModelContextProtocol.AspNetCore/McpEndpointRouteBuilderExtensions.cs

@@ -40,7 +40,7 @@ public static IEndpointConventionBuilder MapMcp(this IEndpointRouteBuilder endpo
             var requestAborted = context.RequestAborted;
 
             response.Headers.ContentType = "text/event-stream";
-            response.Headers.CacheControl = "no-cache";
+            response.Headers.CacheControl = "no-store";
 
             var sessionId = MakeNewSessionId();
             await using var transport = new SseResponseStreamTransport(response.Body, $"/message?sessionId={sessionId}");
@@ -53,10 +53,10 @@ public static IEndpointConventionBuilder MapMcp(this IEndpointRouteBuilder endpo
             try
             {
                 var transportTask = transport.RunAsync(cancellationToken: requestAborted);
-                runSession ??= RunSession;
 
                 try
                 {
+                    runSession ??= RunSession;
                     await runSession(context, server, requestAborted);
                 }
                 finally

src/ModelContextProtocol.AspNetCore/README.md

@@ -23,15 +23,16 @@ To get started, install the package from NuGet
 
 ```
 dotnet new web
-dotnet add package ModelContextProtocol.AspNetcore --prerelease
+dotnet add package ModelContextProtocol.AspNetCore --prerelease
 ```
 
 ## Getting Started
 
 ```csharp
 // Program.cs
-using ModelContextProtocol;
 using ModelContextProtocol.AspNetCore;
+using ModelContextProtocol.Server;
+using System.ComponentModel;
 
 var builder = WebApplication.CreateBuilder(args);
 builder.WebHost.ConfigureKestrel(options =>