Update README with dynamic recurring tasks info

Author: cupatea

README.md

@@ -607,6 +607,8 @@ Rails.application.config.after_initialize do # or to_prepare
 end
 ```
 
+You can also dynamically add or remove recurring tasks by creating or deleting SolidQueue::RecurringTask records. It works the same way as with static tasks, except you must set the static field to false. Changes won’t be picked up immediately — they take effect after about a one-minute delay.
+
 It's possible to run multiple schedulers with the same `recurring_tasks` configuration, for example, if you have multiple servers for redundancy, and you run the `scheduler` in more than one of them. To avoid enqueuing duplicate tasks at the same time, an entry in a new `solid_queue_recurring_executions` table is created in the same transaction as the job is enqueued. This table has a unique index on `task_key` and `run_at`, ensuring only one entry per task per time will be created. This only works if you have `preserve_finished_jobs` set to `true` (the default), and the guarantee applies as long as you keep the jobs around.
 
 **Note**: a single recurring schedule is supported, so you can have multiple schedulers using the same schedule, but not multiple schedulers using different configurations.