Updated API_DOCS.md

Author: RaphiMC

docs/API_DOCS.md

@@ -1,6 +1,6 @@
 # Developer API documentation
 
-### Including ImmediatelyFast using Gradle
+## Including ImmediatelyFast using Gradle
 To use ImmediatelyFast with Gradle you can use the Modrinth maven server:
 ```groovy
 repositories {
@@ -12,8 +12,15 @@ dependencies {
 }
 ```
 
+## Main Class
+The main class is ``net.raphimc.immediatelyfast.ImmediatelyFast``. It holds the currently loaded config, runtime config and the version of the mod.
+
+## Batching
+ImmediatelyFast batches HUD rendering by default. If your mod only renders HUD elements, you don't need to do anything, because ImmediatelyFast will automatically batch your HUD elements.
+
+To manually batch some of your rendering code, you can use the ``BatchingBuffers`` class. Simply wrap your code in ``BatchingBuffers.runBatched`` and it will be batched.
+
+## Old API
+
 ### Main API class
 The main API class is ``net.raphimc.immediatelyfastapi.ImmediatelyFastApi``. It contains access to the batching system and the currently loaded config.
-
-### Accessing internals
-While it is not recommended to access internals of ImmediatelyFast you can do so by using classes in the ``net.raphimc.immediatelyfast`` package. These classes are not guaranteed to be stable and may change at any time, so make sure to build your code in a fail-safe manner if you decide to use them.