Added support for PHP7

tests/Pecee/SimpleRouter/Dummy/ResourceController.php

@@ -0,0 +1,46 @@
+<?php
+class ResourceController implements \Pecee\Controllers\IResourceController
+{
+
+    public function index() : ?string
+    {
+        echo 'index';
+        return null;
+    }
+
+    public function show($id) : ?string
+    {
+        echo 'show ' . $id;
+        return null;
+    }
+
+    public function store() : ?string
+    {
+        echo 'store';
+        return null;
+    }
+
+    public function create() : ?string
+    {
+        echo 'create';
+        return null;
+    }
+
+    public function edit($id) : ?string
+    {
+        echo 'edit ' . $id;
+        return null;
+    }
+
+    public function update($id) : ?string
+    {
+        echo 'update ' . $id;
+        return null;
+    }
+
+    public function destroy($id) : ?string
+    {
+        echo 'destroy ' . $id;
+        return null;
+    }
+}