add crawl queue delay support

src/cli/document/crawl.php

@@ -273,4 +273,9 @@ foreach($search->get() as $document)
             }
         }
     }
+
+    // Apply delay
+    sleep(
+        $config->cli->document->crawl->queue->limit
+    );
 }

src/config.json

@@ -19,7 +19,8 @@
             {
                 "queue":
                 {
-                    "limit":1
+                    "limit":1,
+                    "delay":1
                 },
                 "selector":
                 {