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

view/README.md

@@ -64,7 +64,7 @@ func main() {
     })
 
     // Start the server using a network address.
-    app.Run(iris.Addr(":8080"))
+    app.Listen(":8080")
 }
 ```
 
@@ -110,7 +110,7 @@ func main() {
     app.Get("/", hi)
 
     // http://localhost:8080
-    app.Run(iris.Addr(":8080"))
+    app.Listen(":8080")
 }
 
 func hi(ctx iris.Context) {
@@ -148,7 +148,7 @@ func main() {
     app.Get("/", hi)
 
     // http://localhost:8080
-    app.Run(iris.Addr(":8080"))
+    app.Listen(":8080")
 }
 
 type page struct {