missing dependencies

[arthurwolf]

if I just follow the instructions and try running the python script, I get error about ipython, matplotlib, tensorflow and tensorflow_exemples being missing. I presume they were previously installed on your system so you didn't notice they were needed. do you want a PR where I add this to the readme?

cheers

edit: also the third script needed jinja2 note: tensorflow_exemples, on my system, required typing pip install -q git+https://github.com/tensorflow/examples.git