added php download of membershipments

vendor/illuminate/contracts/View/Engine.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace Illuminate\Contracts\View;
+
+interface Engine
+{
+    /**
+     * Get the evaluated contents of the view.
+     *
+     * @param  string  $path
+     * @param  array  $data
+     * @return string
+     */
+    public function get($path, array $data = []);
+}