Merge pull request #76 from mshahidrasheed/master

Mailbox class added in resource

src/Resources/Mailbox.php

@@ -0,0 +1,45 @@
+<?php
+
+namespace Devio\Pipedrive\Resources;
+
+use Devio\Pipedrive\Http\Response;
+use Devio\Pipedrive\Resources\Basics\Resource;
+
+class Mailbox extends Resource
+{
+    /**
+     * Get the Mail threads details by ID.
+     *
+     * @param $id   Mail threads ID to find.
+	 * @return Response
+     */
+    public function find($id)
+    {
+        return $this->request->get('mailThreads/:id', compact('id'));
+    }
+
+    /**
+     * Get list of mail threads
+     *
+     * @param       $folder
+     * @param array $options
+	 * @return Response 
+     */
+    public function mailThreads($folder, $options = [])
+    {
+        $options['folder'] = $folder;
+
+        return $this->request->get('mailThreads', $options);
+    }
+
+    /**
+     * Get mail messages inside specified mail thread by ID.
+     *
+     * @param $id   Mail threads ID to find messages.
+	 * @return Response
+     */
+    public function mailMessages($id)
+    {
+        return $this->request->get('mailThreads/:id/mailMessages', compact('id'));
+    }
+}