added rich feed parsing example

examples/rich-feed.php

@@ -0,0 +1,31 @@
+<?php
+/*
+ * This file is part of the feed-io package.
+ *
+ * (c) Alexandre Debril <alex.debril@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+require __DIR__.DIRECTORY_SEPARATOR.'bootstrap.php';
+
+$feedIo = \FeedIo\Factory::create()->getFeedIo();
+
+$result = $feedIo->read('https://debril.org/feed/');
+
+echo "feed title : {$result->getFeed()->getTitle()} \n ";
+
+foreach ($result->getFeed() as $item) {
+    echo "item title : {$item->getTitle()} \n ";
+
+    foreach ($item->getAllElements() as $element) {
+        echo "element name : " . $element->getName() . PHP_EOL;
+
+        foreach( $element->getAllElements() as $subElement) {
+            echo "sub element name : " . $subElement->getName() . PHP_EOL;
+            echo "sub element value : " . $subElement->getValue() . PHP_EOL;
+        }
+    }
+
+}