updates Getting Started.

content/docs/getting-started.md

@@ -27,18 +27,17 @@ actix-web = "{{< actix-version "actix-web" >}}"
 
 In order to implement a web server, we first need to create a request handler.
 
-A request handler is a function that accepts an `HttpRequest` instance as its only parameter
-and returns a type that can be converted into `HttpResponse`:
-
-Filename: `src/main.rs`
+A request handler is a function that accepts any type that can be extracted from a
+request (ie, `impl FromRequest`) as its only parameter and returns a type that
+can be converted into an `HttpResponse` (ie, `impl Responder`):
 
 {{< include-example example="getting-started" section="setup" >}}
 
-Next, create an `Application` instance and register the request handler with
-the application's `resource` on a particular *HTTP method* and *path* and
+Next, create an `App` instance and register the request handler with
+the application's `route` on a particular *HTTP method* and *path* and
 after that, the application instance can be used with `HttpServer` to listen
 for incoming connections. The server accepts a function that should return an
-`HttpResponse`.
+application factory.
 
 {{< include-example example="getting-started" section="main" >}}
 

examples/getting-started/Cargo.toml

@@ -1,6 +1,7 @@
 [package]
 name = "getting-started"
 version = "0.7.0"
+edition = "2018"
 workspace = "../"
 
 [dependencies]

examples/getting-started/src/main.rs

@@ -1,8 +1,7 @@
 // <setup>
-extern crate actix_web;
-use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer};
+use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer, Responder};
 
-fn index(_req: HttpRequest) -> HttpResponse {
+fn index(_req: HttpRequest) -> impl Responder {
     HttpResponse::Ok().body("Hello world!")
 }
 // </setup>