TensorFlow: How to optimise your input pipeline with queues and multi-threading

Hello everybody,

TLDR:

- I implement a first basic neural net using the "feed_dict" system

- I show step by step how to use queues in TF

- I update the first example with a queue implementation and show that i train 33% faster the neural net

- bonus: Some more code on queues on my Github in the references section