Add image to README
Add 3D surface plots
Change 2d plot to use colorbar
Separate training 2d plot function
Add colorbar to scatterplot
Add gradient descent toy function
Add nn gradient descent
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