examples: replace all app.Run(iris.Addr(...)) with app.Listen just for the shake of simplicity, both are doing the same exact thing as it's described on the http listening first example.

Former-commit-id: d20afb2e899aee658a8e0ed1693357798df93462

_examples/subdomains/multi/main.go

@@ -36,5 +36,5 @@ func main() {
 	// Make sure you prepend the "http" in your browser
 	// because .local is a virtual domain we think to show case you
 	// that you can declare any syntactical correct name as a subdomain in iris.
-	app.Run(iris.Addr("domain.local:80")) // for beginners: look ../hosts file
+	app.Listen("domain.local:80") // for beginners: look ../hosts file
 }

_examples/subdomains/redirect/main.go

@@ -22,7 +22,7 @@ func main() {
 	// http://mydomain.com             -> http://www.mydomain.com
 	// http://mydomain.com/users       -> http://www.mydomain.com/users
 	// http://mydomain.com/users/login -> http://www.mydomain.com/users/login
-	app.Run(iris.Addr(addr))
+	app.Listen(addr)
 }
 
 func newApp() *iris.Application {

_examples/subdomains/single/main.go

@@ -42,5 +42,5 @@ func main() {
 	// http://admin.mydomain.com/hey2
 	// http://mydomain.com
 	// http://mydomain.com/hey
-	app.Run(iris.Addr("mydomain.com:80")) // for beginners: look ../hosts file
+	app.Listen("mydomain.com:80") // for beginners: look ../hosts file
 }

_examples/subdomains/wildcard/main.go

@@ -54,7 +54,7 @@ func main() {
 	// http://username1.mydomain.com:8080
 	// http://username2.mydomain.com:8080/something
 	// http://username3.mydomain.com:8080/something/yourname
-	app.Run(iris.Addr("mydomain.com:8080")) // for beginners: look ../hosts file
+	app.Listen("mydomain.com:8080") // for beginners: look ../hosts file
 }
 
 func dynamicSubdomainHandler(ctx iris.Context) {

_examples/subdomains/www/main.go

@@ -64,7 +64,7 @@ func main() {
 	// http://www.mydomain.com/contact
 	// http://www.mydomain.com/api/users
 	// http://www.mydomain.com/api/users/42
-	if err := app.Run(iris.Addr("mydomain.com:80")); err != nil {
+	if err := app.Listen("mydomain.com:80"); err != nil {
 		panic(err)
 	}
 }