release U-Net brain tumor link

Author: zsdonghao

README.md

@@ -153,6 +153,7 @@ We have included the corresponding modularized implementations of Google TensorF
  - Wide ResNet (CIFAR) by [ritchieng](https://github.com/ritchieng/wideresnet-tensorlayer).
  - More CNN implementations of [TF-Slim](https://github.com/tensorflow/models/tree/master/slim#pre-trained-models) can be connected to TensorLayer via SlimNetsLayer.
  - [Spatial Transformer Networks](https://arxiv.org/abs/1506.02025) by [zsdonghao](https://github.com/zsdonghao/Spatial-Transformer-Nets).
+ - [U-Net for brain tumor segmentation](https://github.com/zsdonghao/u-net-brain-tumor) by [zsdonghao](https://github.com/zsdonghao/u-net-brain-tumor).
 
 ## Natural Language Processing
  - Recurrent Neural Network (LSTM). Apply multiple LSTM to PTB dataset for language modeling, see ``tutorial_ptb_lstm_state_is_tuple.py``.

docs/user/example.rst

@@ -23,6 +23,8 @@ Computer Vision
  - Wide ResNet (CIFAR) by `ritchieng <https://github.com/ritchieng/wideresnet-tensorlayer>`_.
  - More CNN implementations of `TF-Slim <https://github.com/tensorflow/models/tree/master/slim#pre-trained-models>`_ can be connected to TensorLayer via SlimNetsLayer.
  - `Spatial Transformer Networks <https://arxiv.org/abs/1506.02025>`_ by `zsdonghao <https://github.com/zsdonghao/Spatial-Transformer-Nets>`_.
+ - `U-Net for brain tumor segmentation <https://github.com/zsdonghao/u-net-brain-tumor>`_ by `zsdonghao <https://github.com/zsdonghao/u-net-brain-tumor>`_.
+
 
 Natural Language Processing
 ==============================