update for TF 1.4 / TL 1.8.0+

Author: zsdonghao

README.md

@@ -1,7 +1,7 @@
 ## Super Resolution Examples
 
 
-We run this script under [TensorFlow](https://www.tensorflow.org) 1.2 and the [TensorLayer](https://github.com/tensorlayer/tensorlayer) 1.8.0.
+We run this script under [TensorFlow](https://www.tensorflow.org) 1.4 and the [TensorLayer](https://github.com/tensorlayer/tensorlayer) 1.8.0+.
 
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 ⚠️ This repo will be merged into [tensorlayer](https://github.com/zsdonghao/tensorlayer) soon.