message: Fix: mean shape in compatible with input shape
  This commit is to fix issue
  * reference:
  1. https://groups.google.com/forum/#!topic/caffe-users/nBpWJCcJoCU
  2.
diff: @@ -256,7 +256,12 @@ class Transformer:
  if len(ms) != 3:
  raise ValueError('Mean shape invalid')
  if ms != self.inputs[in_][1:]:
  - raise ValueError('Mean shape incompatible with input shape.')
  + in_shape = self.inputs[in_][1:]
  + m_min, m_max = mean.min(), mean.max()
  + normal_mean = (mean - m_min) / (m_max - m_min)
  + mean = resize_image(normal_mean.transpose((1,2,0)),
  + in_shape[1:]).transpose((2,0,1)) * \
  + (m_max - m_min) + m_min
  self.mean[in_] = mean
  def set_input_scale(self, in_, scale):
  