Update introspection docs

docs/content/reference/introspection.md

@@ -5,36 +5,33 @@ linkTitle: Introspection
 menu: { main: { parent: 'reference', weight: 10 } }
 ---
 
-One of the best features of GraphQL is it's powerful discoverability, but sometimes you don't want to allow others to explore your endpoint.
+One of the best features of GraphQL is it's powerful discoverability and its is automatically included when using `NewDefaultServer`.
 
 ## Disable introspection for the whole server
 
-To turn introspection on and off at runtime, pass the `IntrospectionEnabled` handler option when starting the server:
-
+To opt out of introspection globally you should build your own server with only the features you use. For example a simple server that only does POST, and only has introspection in dev could look like:
 ```go
+srv := handler.New(es)
+
+srv.AddTransport(transport.Options{})
+srv.AddTransport(transport.POST{})
 
- srv := handler.NewDefaultServer(NewExecutableSchema(Config{Resolvers: resolvers})) 
- srv.AroundOperations(func(ctx context.Context, next graphql.OperationHandler) graphql.ResponseHandler { 
- 	graphql.GetOperationContext(ctx).DisableIntrospection = true 
- 	return next(ctx) 
- }) 
+if os.GetEnv("ENVIRONMENT") == "development" {
+    srv.Use(extension.Introspection{})
+}
 ```
 
 ## Disabling introspection based on authentication
 
-Introspection can also be enabled on a per-request context basis.  For example, you could modify it in a middleware based on user authentication:
+Introspection can also be enabled on a per-request context basis. For example, you could modify it in a middleware based on user authentication:
 
 ```go
-srv := httptest.NewServer(
-	handler.GraphQL(
-		NewExecutableSchema(Config{Resolvers: resolvers}),
-		handler.RequestMiddleware(func(ctx context.Context, next func(ctx context.Context) []byte) []byte {
-			if !userForContext(ctx).IsAdmin {
-				graphql.GetOperationContext(ctx).DisableIntrospection = true
-			}
-
-			return next(ctx)
-		}),
-	),
-)
+srv := handler.NewDefaultServer(es)
+srv.AroundOperations(func(ctx context.Context, next graphql.OperationHandler) graphql.ResponseHandler {
+    if !userForContext(ctx).IsAdmin {
+        graphql.GetOperationContext(ctx).DisableIntrospection = true
+    }
+
+    return next(ctx)
+})
 ```