Add nn print
Create new nn py
Complete initialization of nn
Add feed forward
Working feed forward Run
Working convergence for xor
Change nn to match working one
Working gradient descent
Working nn and plotting
Merge branch 'feature/rharris' into feature/gradient-descent

Conflicts:
	figure_cost_function.png
	figure_cost_function_3d_315.png
	figure_cost_function_3d_45.png
	plot_nn.py
	runner.py
Update pngs