Update example/README.md

Signed-off-by: Jack Cherng <jfcherng@gmail.com>

Author: jfcherng

README.md

@@ -45,7 +45,7 @@ composer require jfcherng/php-diff
 
 ## Example
 
-See [example/demo.php](https://github.com/jfcherng/php-diff/blob/v6/example/demo.php) and files under `tests/`.
+See `demo.php` in the [example/](https://github.com/jfcherng/php-diff/blob/v6/example) and files under `tests/`.
 
 ```php
 <?php

composer.json

@@ -44,13 +44,13 @@
             "phan --color",
             "phpcs --colors -n"
         ],
-        "example": [
-            "Composer\\Config::disableProcessTimeout",
-            "@php -S localhost:12388 -t example/"
-        ],
         "fix": [
             "php-cs-fixer fix --verbose"
         ],
+        "server": [
+            "Composer\\Config::disableProcessTimeout",
+            "@php -S localhost:12388 -t example/"
+        ],
         "test": [
             "phpunit --verbose"
         ]

example/README.md

@@ -1,7 +1,7 @@
-To run the example on your local machine, you can follow steps below.
+To run `demo.php` on your local machine, you can follow steps below.
 
 In the parent folder (i.e., this project's root directory):
 
-1. Install dependencies with `composer install`.
-1. Start PHP development server with `composer run-script example`.
+1. Install dependencies with `composer upgrade`.
+1. Start PHP development server with `composer run-script server`.
 1. Visit `http://localhost:12388/demo.php` with your web browser.