Merge pull request 'Second pull request' (#2) from new_branch into main

Reviewed-on: https://cs-shelter.xyz/RazerFord/first_repository/pulls/2

README.md

@@ -1 +1,3 @@
-### Hello world
+### Start index
+
+Enter: `php -f ./index.php`

index.php

@@ -0,0 +1,3 @@
+<?php
+
+echo "Hello world\n";