README.md: make backers visible on the top of the page, replaced the prev api to the https://iris-go.com/backers.svg in order this to happens

Former-commit-id: 093f11d05fe9556c79de2cb2886e5d0569f27336

_examples/http_request/read-json/main.go

@@ -21,10 +21,30 @@ func MyHandler(ctx iris.Context) {
 	ctx.Writef("Received: %#v\n", c)
 }
 
+type Person struct {
+	Name string `json:"name"`
+	Age  int    `json:"age"`
+}
+
+// MyHandler2 reads a collection of Person from JSON post body.
+func MyHandler2(ctx iris.Context) {
+	var persons []Person
+	err := ctx.ReadJSON(&persons)
+
+	if err != nil {
+		ctx.StatusCode(iris.StatusBadRequest)
+		ctx.WriteString(err.Error())
+		return
+	}
+
+	ctx.Writef("Received: %#+v\n", persons)
+}
+
 func main() {
 	app := iris.New()
 
 	app.Post("/", MyHandler)
+	app.Post("/slice", MyHandler2)
 
 	// use Postman or whatever to do a POST request
 	// to the http://localhost:8080 with RAW BODY: