fix import

examples/ResNet/README.md

@@ -44,4 +44,4 @@ The validation error here is computed on test set.
 
 ![cifar10](cifar10-resnet.png)
 
-Also see an implementation of [DenseNet](https://github.com/YixuanLi/densenet-tensorflow) from [Densely Connected Convolutional Networks](https://arxiv.org/abs/1608.06993).
+Also see a [DenseNet implementation](https://github.com/YixuanLi/densenet-tensorflow) of the paper [Densely Connected Convolutional Networks](https://arxiv.org/abs/1608.06993).

tensorpack/tfutils/sessinit.py

@@ -10,7 +10,7 @@ import numpy as np
 import tensorflow as tf
 import six
 
-from ..utils import logger
+from ..utils import logger, PREDICT_TOWER
 from .common import get_op_var_name
 from .varmanip import SessionUpdate, get_savename_from_varname, is_training_name