chore: add another example for using the response directly

Some response functions don't actually return the response object, which
is why it needs to be returned directly.

Author: phikes

README.md

@@ -262,10 +262,19 @@ import {Controller, Req, Res, Get} from "routing-controllers";
 export class UserController {
 
     @Get("/users")
-    getAll(@Req() request: any, @Res() response: any) {
+    getAllUsers(@Req() request: any, @Res() response: any) {
         return response.send("Hello response!");
     }
 
+    @Get("/posts")
+    getAllPosts(@Req() request: any, @Res() response: any) {
+        // some response functions don't return the response object,
+        // so you need to return it explicitly
+        response.redirect("/users");
+
+        return response;
+    }
+
 }
 ```