🚌 next version preparation: new PreflightResult interface for hero handlers

Former-commit-id: ea2d7ab93889beaddfe269bd213d259d26df979f

_examples/README.md

@@ -8,7 +8,7 @@ It doesn't always contain the "best ways" but it does cover each important featu
 
 ## Running the examples
 
-[![Run in Postman](https://run.pstmn.io/button.svg)](https://app.getpostman.com/run-collection/bd489282b676e30de158)
+<!-- [![Run in Postman](https://run.pstmn.io/button.svg)](https://www.getpostman.com/collections/16e76a9528aba863e821) -->
 
 1. Install the Go Programming Language, version 1.12+ from https://golang.org/dl.
 2. [Install Iris](https://github.com/kataras/iris/wiki/installation)

_examples/dependency-injection/basic/main.go

@@ -23,5 +23,5 @@ func handler(id int, in testInput) testOutput {
 func main() {
 	app := iris.New()
 	app.HandleFunc(iris.MethodPost, "/{id:int}", handler)
-	app.Listen(":5000", iris.WithOptimizations)
+	app.Listen(":8080")
 }