update augmentor

examples/ResNet/README.md

@@ -18,7 +18,7 @@ Also see an implementation of [DenseNet](https://github.com/YixuanLi/densenet-te
 
 ## load-resnet.py
 
-A script to convert and run ResNet{50,101,152} ImageNet models released by Kaiming.
+A script to convert and run ResNet{50,101,152} ImageNet caffe models [released by Kaiming](https://github.com/KaimingHe/deep-residual-networks).
 
 Example usage:
 ```bash

tensorpack/dataflow/image.py

@@ -46,7 +46,10 @@ class AugmentImageComponent(MapDataComponent):
         :param augmentors: a list of `ImageAugmentor` instance to be applied in order.
         :param index: the index (or list of indices) of the image component in the produced datapoints by `ds`. default to be 0
         """
-        self.augs = AugmentorList(augmentors)
+        if isinstance(augmentors, AugmentorList):
+            self.augs = augmentors
+        else:
+            self.augs = AugmentorList(augmentors)
         super(AugmentImageComponent, self).__init__(
             ds, lambda x: self.augs.augment(x), index)