Update documentation for auto boot option

Author: cyrossignol

README.md

@@ -1002,6 +1002,12 @@ when `SESSION_DRIVER` equals `redis-sentinel`. It defaults to the package's
 internal, auto-configured *session* connection when unset unless the
 application configuration already contains a value for `session.connection`.
 
+### `REDIS_SENTINEL_AUTO_BOOT`
+
+When set to `true`, this flag instructs the package to boot the package after
+it registers its services without waiting for the application boot phase. This
+provides a way for applications that use Sentinel connections in other service
+providers to initialize the package immediately.
 
 Appendix: Configuration Examples
 --------------------------------

config/redis-sentinel.php

@@ -64,6 +64,12 @@
     | values to the cache file. If the application uses this configuration
     | key for other purposes, set the value of "clean_config" to FALSE.
     |
+    | The "auto_boot" directive instructs the package to immediately boot its
+    | services after the registration phase. This allows applications to use
+    | Sentinel-backed services in service providers during the registration
+    | phase for compatibility with other packages that may use cache, session
+    | queue, and broadcasting features before the application boot phase.
+    |
     */
 
     'load_config' => true,