adding app/library/OAuth/UserData classes (interface and Github implementation)

app/library/OAuth/UserData/Github.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace Httpcb\OAuth\UserData;
+
+class Github implements UserDataInterface
+{
+    protected $data;
+
+    /**
+     * {@inheritDoc}
+     */
+    public function __construct(array $data)
+    {
+        $this->data = $data;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getProvider()
+    {
+        return 'Github';
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getId()
+    {
+        return (int) $this->data['id'];
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getUsername()
+    {
+        return $this->data['login'];
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getName()
+    {
+        return $this->data['name'];
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getEmail()
+    {
+        return $this->data['email'];
+    }
+}