README.md in seo_cache-0.12.0 vs README.md in seo_cache-0.13.0

@@ -68,9 +68,15 @@
 
 ```ruby
 SeoCache.redis_namespace = '_my_project:seo_cache'
 ```
 
+Waiting time before the page is fully loaded (optional in sec, useful for async elements):
+    
+```ruby
+SeoCache.wait_time_for_page_loading = 3
+```
+
 Specific log file (if you want to log missed cache urls):
     
 ```ruby
 SeoCache.logger_path = Rails.root.join('log', 'seo_cache.log')
 ```