Added doc-blocks

Author: Andrey Helldar

src/Contracts/Actionable.php

@@ -4,7 +4,17 @@
 
 interface Actionable
 {
+    /**
+     * Run the actions.
+     *
+     * @return void
+     */
     public function up(): void;
 
+    /**
+     * Reverse the actions.
+     *
+     * @return void
+     */
     public function down(): void;
 }