Mention rate-limit handling

README.md

@@ -45,7 +45,8 @@ The core concepts of JDA have been developed to make building scalable apps easy
     Providing simplified events from the gateway API, to respond to any platform events in real-time without much hassle.
 2. Rest Actions  
     Easy to use and scalable implementation of REST API functionality, letting you choose between callbacks with combinators, futures, and blocking.
-3. Customizable Cache  
+    The library also handles rate-limits imposed by Discord automatically, while still offering ways to replace the default implementation.
+4. Customizable Cache  
     Trading memory usage for better performance where necessary, with sane default presets to choose from and customize.
 
 ## Installation