Improve documentation and examples

Author: yadaiio

README.md

@@ -1,21 +1,21 @@
 # clue/reactphp-ssdp
 
-[![CI status](https://github.com/clue/reactphp-ssdp/workflows/CI/badge.svg)](https://github.com/clue/reactphp-ssdp/actions)
+[![CI status](https://github.com/clue/reactphp-ssdp/actions/workflows/ci.yml/badge.svg)](https://github.com/clue/reactphp-ssdp/actions)
 [![installs on Packagist](https://img.shields.io/packagist/dt/clue/ssdp-react?color=blue&label=installs%20on%20Packagist)](https://packagist.org/packages/clue/ssdp-react)
 
-Async [Simple Service Discovery Protocol (SSDP)](http://en.wikipedia.org/wiki/Simple_Service_Discovery_Protocol), built on top of [ReactPHP](https://reactphp.org/).
+Async [Simple Service Discovery Protocol (SSDP)](https://en.wikipedia.org/wiki/Simple_Service_Discovery_Protocol), built on top of [ReactPHP](https://reactphp.org/).
 
-SSDP is part of [Universal Plug and Play (UPnP)](http://de.wikipedia.org/wiki/Universal_Plug_and_Play)
+SSDP is part of [Universal Plug and Play (UPnP)](https://de.wikipedia.org/wiki/Universal_Plug_and_Play)
 and is commonly used to discover network services on home networks without
 requiring any manual configuration, such as automatically discovering printers,
 multimedia devices and network routers.
 
 This library implements SSDP as defined in the
 [UPnP device architecture definition](http://upnp.org/specs/arch/UPnP-arch-DeviceArchitecture-v1.1.pdf) (PDF)
 and uses HTTP over Multicast UDP (HTTPMU) as defined in the
-[IETF draft](https://tools.ietf.org/html/draft-goland-http-udp-01).
+[IETF draft](https://datatracker.ietf.org/doc/html/draft-goland-http-udp-01).
 As an alternative, some devices use DNS-Based Service Discovery (DNS-SD) instead
-as defined in [RFC 6763](http://tools.ietf.org/html/rfc6763).
+as defined in [RFC 6763](https://tools.ietf.org/html/rfc6763).
 
 **Table of Contents**
 
@@ -31,13 +31,17 @@ as defined in [RFC 6763](http://tools.ietf.org/html/rfc6763).
 Once [installed](#install), you can use the following code to search all available UPnP devices in your network:
 
 ```php
+<?php
+
+require __DIR__ . '/vendor/autoload.php';
+
 $client = new Clue\React\Ssdp\Client();
 
 $client->search()->then(
     function () {
         echo 'Search completed' . PHP_EOL;
     },
-    function($e) {
+    function(Exception $e) {
         echo 'There was an error searching for devices: ' . $e . PHP_EOL;
     },
     function ($progress) {
@@ -48,11 +52,11 @@ $client->search()->then(
 );
 ```
 
-See also the [examples](examples).
+See also the [examples](examples/).
 
 ## Install
 
-The recommended way to install this library is [through composer](http://getcomposer.org). [New to composer?](http://getcomposer.org/doc/00-intro.md)
+The recommended way to install this library is [through composer](https://getcomposer.org/). [New to composer?](https://getcomposer.org/doc/00-intro.md)
 
 ```JSON
 {
@@ -65,21 +69,21 @@ The recommended way to install this library is [through composer](http://getcomp
 This project aims to run on any platform and thus does not require any PHP
 extensions and supports running on legacy PHP 5.3 through current PHP 8+ and
 HHVM.
-It's *highly recommended to use PHP 7+* for this project.
+It's *highly recommended to use the latest supported PHP version* for this project.
 
 ## Tests
 
 To run the test suite, you first need to clone this repo and then install all
-dependencies [through Composer](https://getcomposer.org):
+dependencies [through Composer](https://getcomposer.org/):
 
 ```bash
-$ composer install
+composer install
 ```
 
 To run the test suite, go to the project root and run:
 
 ```bash
-$ php vendor/bin/phpunit
+vendor/bin/phpunit
 ```
 
 ## License

examples/demo.php

@@ -1,16 +1,14 @@
 <?php
 
-use Clue\React\Ssdp\Client;
-
 require __DIR__ . '/../vendor/autoload.php';
 
-$client = new Client();
+$client = new Clue\React\Ssdp\Client();
 
 $client->search()->then(
     function () {
         echo 'Search completed' . PHP_EOL;
     },
-    function($e) {
+    function(Exception $e) {
         echo 'There was an error searching for devices: ' . $e . PHP_EOL;
     },
     function ($progress) {