Add Information to the Plot

Using the .set() function, perform the following:

• set the x-axis label (xlabel) to 'GDP per capita';
• set the y-axis label (ylabel) to 'Life expectancy';
• set the plot title (title) to 'GDP per capita vs life expectancy'.

Assign fig.colorbar() to the cbar variable.

Set the colormap legend label to 'HDI' (by applying the .ax.set_xlabel() to the cbar).