First commit of relational example

examples/relational/Model/Users.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace RelationalExample\Model;
+
+use Illuminate\Database\Capsule\Manager as Capsule;
+
+class Users
+{
+    public function get($username = null)
+    {
+        $query = Capsule::table('users')->select(['username', 'name', 'email', 'photo']);
+
+        if ($username !== null) {
+            $query->where('username', '=', $username);
+        }
+
+        $result = $query->get();
+
+        if (count($result) > 0) {
+            return $result;
+        }
+
+        return null;
+    }
+}