Parametric t-SNE

An implementation of "Parametric t-SNE" in Keras.
Authors used stacked RBM in the paper, but I used simple ReLU units instead.

I used the python implementation of t-SNE by Laurens van der Maaten as a reference.

For some reason, this code is not working on Keras 1.0.4.
if you use 1.0.4, please reinstall by pip install Keras==1.0.3