Move php to php5 and add a php7 example that uses composer

php7/test/GildedRoseTest.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App;
+
+require_once __DIR__ . '/../vendor/autoload.php';
+
+class GildedRoseTest extends \PHPUnit\Framework\TestCase {
+    public function testFoo() {
+        $items = array(new Item("foo", 0, 0));
+        $gildedRose = new GildedRose($items);
+        $gildedRose->updateQuality();
+        $this->assertEquals("fixme", $items[0]->name);
+    }
+}

php7/test/bootstrap.php

@@ -0,0 +1,2 @@
+<?php
+set_include_path(get_include_path() . PATH_SEPARATOR . __DIR__.'/../src');