port GildedRose Java version to PHP with PHPUnit test

php/phpunit.xml

@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/3.7/phpunit.xsd"
+	backupGlobals="false" 
+	bootstrap="test/bootstrap.php"
+	colors="false" 
+	strict="true" 
+	verbose="true">
+
+	<testsuites>
+		<testsuite name="AllTests">
+			<directory suffix="_test.php">test</directory>
+		</testsuite>
+	</testsuites>
+</phpunit>