Update Tagging_API.md

Author: Roberto De Ioris

docs/Tagging_API.md

@@ -35,3 +35,46 @@ world = ue.get_editor_world()
 for actor in find_all_actors_with_tag(world, 'foo'):
     print(actor)
 ```
+
+Eventually you can use the blueprint api:
+
+```python
+import unreal_engine as ue
+from unreal_engine.classes import GameplayStatics
+
+world = ue.get_editor_world()
+
+# blueprint ufunctions returns a tuple (as UFunctions can returns multiple values)
+actors, = GameplayStatics.GetAllActorsWithTag(world, 'one')
+for actor in actors:
+    print(actor)
+```
+
+## Tagging Components
+
+You can tag components too using the property 'ComponentTags':
+
+```python
+your_component.ComponentTags = ['one', 'two', 'three']
+```
+
+Fast-check of tag availability can be done with the component_has_tag() function:
+
+```python
+if your_component.component_has_tag('one'):
+    print('yes')
+```
+
+While you can get the list of actor's component tagged with the specific value:
+
+```python
+component_list = your_actor.get_components_by_tag('two')
+```
+
+The function can take an optional argument specifying which classes of ActorComponent must be taken into account:
+
+```python
+from unreal_engine.classes import SceneComponent
+# search all the components children of the class SceneComponent and tagged with 'two'
+component_list = your_actor.get_components_by_tag('two', SceneComponent)
+```