Add warning to events and echo page that listeners are not dynamic.

Author: joshhanley

events.blade.php

@@ -80,6 +80,10 @@ protected function getListeners()
 @endslot
 @endcomponent
 
+@component('components.warning')
+<code>getListeners()</code> will only dynamically generate the names of listeners when the component is mounted. Once the listeners are setup, these can't be changed.
+@endcomponent
+
 ## Passing Parameters {#passing-parameters}
 
 You can also send parameters with an event emission.

laravel-echo.blade.php

@@ -86,6 +86,10 @@ public function notifyNewOrder()
 @endslot
 @endcomponent
 
+@component('components.warning')
+<code>getListeners()</code> will only dynamically generate the names of listeners when the component is mounted. Once the listeners are setup, these can't be changed.
+@endcomponent
+
 Now, Livewire will intercept the received event from Pusher, and act accordingly.
 
 ## Private & Presence Channels {#private-presence-channels}