Merge branch 'master' of https://github.com/20tab/UnrealEnginePython

Author: Roberto De Ioris

docs/Foliage_API.md

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+# The Foliage API
+
+Each UWorld can have its AInstancedFoliageActor dedicated to drawing foliage.
+
+Basically the foliage system is massive instancing of static meshes.
+
+UFoliageType is the representation of a StaticMesh that can be drawn as Foliage.
+
+You can create a UFoliageType easily:
+
+```python
+from unreal_engine.classes import FoliageTypeFactory, StaticMesh
+import unreal_engine as ue
+
+factory = FoliageTypeFactory()
+foliage_type = factory.factory_create_new('/Game/Foliage/FirstFoliageType')
+foliage_type.Mesh = ue.load_object(StaticMesh, '/Game/Mesh/StaticMesh001')
+foliage_type.save_package()
+```
+
+To add a UFoliageType to a UWorld just do:
+
+```python
+
+world.add_foliage_asset(foliage_type)
+```
+
+Eventually you can add a StaticMesh (instead of a FoliageType) directly to the AInstancedFoliageActor:
+
+```python
+world.add_foliage_asset(ue.load_object(StaticMesh, '/Game/Mesh/StaticMesh001'))
+```
+
+Note: unfortunately the foliage editor is not automatically updated, just switch the editor mode manually to the foliage mode to update the assets list.
+
+You can get a reference to the AInstancedFoliageActor of a world using:
+
+```python
+foliage_actor = world.get_instanced_foliage_actor_for_current_level()
+```