Update links to bottom-up attention features

Fixes #3

vqa-v2/data/download.sh

@@ -10,8 +10,8 @@ wget http://visualqa.org/data/mscoco/vqa/v2_Annotations_Train_mscoco.zip http://
 wget http://visualqa.org/data/mscoco/vqa/v2_Complementary_Pairs_Train_mscoco.zip http://visualqa.org/data/mscoco/vqa/v2_Complementary_Pairs_Val_mscoco.zip
 
 # bottom up features (https://github.com/peteanderson80/bottom-up-attention)
-wget https://storage.googleapis.com/bottom-up-attention/trainval.zip https://storage.googleapis.com/bottom-up-attention/test2015.zip
+wget https://imagecaption.blob.core.windows.net/imagecaption/trainval.zip https://imagecaption.blob.core.windows.net/imagecaption/test2015.zip
 ## alternative bottom-up features: 36 fixed proposals per image instead of 10--100 adaptive proposals per image.
-#wget https://storage.googleapis.com/bottom-up-attention/trainval_36.zip https://storage.googleapis.com/bottom-up-attention/test2015_36.zip
+#wget https://imagecaption.blob.core.windows.net/imagecaption/trainval_36.zip https://imagecaption.blob.core.windows.net/imagecaption/test2015_36.zip
 
 unzip "*.zip"