Added Giphy adapter

Author: oscarotero

Embed/Adapters/Giphy.php

@@ -0,0 +1,32 @@
+<?php
+/**
+ * Adapter to get the embed code from giphy.com
+ */
+namespace Embed\Adapters;
+
+use Embed\Viewers;
+use Embed\Request;
+
+class Giphy extends Webpage implements AdapterInterface
+{
+    /**
+     * {@inheritDoc}
+     */
+    public static function check(Request $request)
+    {
+        return $request->match(array(
+            'https?://giphy.com/gifs/*'
+        ));
+    }
+
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getCode()
+    {
+        if (($id = $this->request->getDirectory(1))) {
+            return Viewers::iframe('//giphy.com/embed/'.$id, $this->width.'px', $this->height.'px');
+        }
+    }
+}