Great result from new parameters

[markzhong88]

This is not a issue, just want to say that the new parameter in README generate really good result. Compare to previous default parameter, I used to get image with a lot of broken glasses image, or a lot of fragments. Now it's smooth, even with 1 batch. Any idea why you change style_layers from "relu1_1,relu2_1,relu3_1,relu4_1" to "relu1_2,relu2_2,relu3_2,relu4_2" ? Thanks for the improvement.