Fix random and center crop docs (#247)

* load densenet tensors onto cpu

* fix docs for size param in random + center crop

* revert incorrect commit

torchvision/transforms.py

@@ -204,7 +204,7 @@ class CenterCrop(object):
 
     Args:
         size (sequence or int): Desired output size of the crop. If size is an
-            int instead of sequence like (h, w), a square crop (size, size) is
+            int instead of sequence like (w, h), a square crop (size, size) is
             made.
     """
 
@@ -283,7 +283,7 @@ class RandomCrop(object):
 
     Args:
         size (sequence or int): Desired output size of the crop. If size is an
-            int instead of sequence like (h, w), a square crop (size, size) is
+            int instead of sequence like (w, h), a square crop (size, size) is
             made.
         padding (int or sequence, optional): Optional padding on each border
             of the image. Default is 0, i.e no padding. If a sequence of length