Work on piggy banks [skip ci]

app/lib/Firefly/Storage/Piggybank/PiggybankRepositoryInterface.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace Firefly\Storage\Piggybank;
+
+
+/**
+ * Interface LimitRepositoryInterface
+ *
+ * @package Firefly\Storage\Limit
+ */
+interface PiggybankRepositoryInterface
+{
+
+    public function find($piggyBankId);
+    public function count();
+    public function store($data);
+    public function get();
+}