Add blocks_generator to the api too

bob/pad/face/utils/__init__.py

 from .load_utils import (
     frames, number_of_frames, yield_frames, yield_faces, scale_face, blocks,
-    bbx_cropper, min_face_size_normalizer, color_augmentation,
+    bbx_cropper, min_face_size_normalizer, color_augmentation, block_generator,
     the_giant_video_loader)
 
 # gets sphinx autodoc done right - don't remove it

doc/api.rst

@@ -73,6 +73,7 @@ Utilities
 .. autosummary::
    bob.pad.face.utils.bbx_cropper
    bob.pad.face.utils.blocks
+   bob.pad.face.utils.blocks_generator
    bob.pad.face.utils.color_augmentation
    bob.pad.face.utils.frames
    bob.pad.face.utils.min_face_size_normalizer