Add script for plots from dataframe

[jrwaine]

Create plots using tools such as seaborn to automatically generate the data plot of players

I suggest a dispersion plot of Cp loss vs. Rating for each player, calculating the tendency line and the R^2 to check the correlation. It's clear from the results that Niemann has little or no correlation between Cp loss and rating.

Seaborn has all the tools to do all that automatically and generate beautiful plots.