Rename Interfaces to Contracts to better match Laravel conventions

app/Contracts/Widget.php

@@ -0,0 +1,26 @@
+<?php
+
+namespace App\Contracts;
+
+use Arrilot\Widgets\AbstractWidget;
+
+/**
+ * Class Widget
+ */
+abstract class Widget extends AbstractWidget
+{
+    public $cacheTime = 0;
+
+    /**
+     * Render the template
+     *
+     * @param string $template
+     * @param array  $vars
+     *
+     * @return \Illuminate\Contracts\View\Factory|\Illuminate\View\View
+     */
+    public function view(string $template, array $vars = [])
+    {
+        return view($template, $vars);
+    }
+}