message: add tensorFlow visualization toolkit links
diff: @@ -127,6 +127,7 @@ Build Type
  * [TensorFlow Roadmap](https://www.tensorflow.org/community/roadmap)
  * [TensorFlow White Papers](https://www.tensorflow.org/about/bib)
  * [TensorFlow YouTube Channel](https://www.youtube.com/channel/UC0rqucBdTuFTjJiefW5t-IQ)
  +* [TensorFlow Visualization Toolkit](https://github.com/tensorflow/tensorboard)
  Learn more about the TensorFlow community at the [community page of tensorflow.org](https://www.tensorflow.org/community) for a few ways to participate.
  