Preparation for Packaging

[Sparkier]

Describe your improvements
Started packaging process by changing the project structure and defining the setup configuration.

To Reproduce
Follow the steps outlined in the README.md.

[Sparkier]

Hey @fuzhanrahmanian, I started this PR to make packaging of this project possible. I noticed that currently, the alexnet.py uses luna/pretrained_models/data/meta_clsloc.mat, which is not included in the project. Should we include this or can we maybe get rid of this requirement?

[Sparkier]

I removed unused code from the alexnet file, so that the .mat file is not needed anymore. However, in googlenet.py, we still have:

luna/luna/pretrained_models/googlenet.py

Lines 433 to 434 in c71e518

	googlenet.load_weights(os.path.join(
	os.path.dirname(__file__), 'googlenet_weights.h5'))

and

luna/luna/pretrained_models/models.py

Line 76 in c71e518

return alexnet.alex_net("alexnet_weights.h5")

, which are referring to static files. We should think about how to remove that in a future PR.

[fuzhanrahmanian]

Is numpy not needed? (image.py uses it)

[Sparkier]

I think numpy is a dependency of TensorFlow, which is why it still works I assume. However, if we use it directly we should add it. I will do that.

[fuzhanrahmanian]

Except "NumPy" in the install requirements, the changes look good, thanks!