Added flow chart with an overview of the process for obtaining a driver's license

[marlonbernardes]

@gregdeane I'm gonna merge this as-is, as I believe it's already a great addition - despite any possible grammar mistakes. If there's anything you believe I should change (grammar or content wise), please let me know. I'll gladly tackle any issues on a different PR.

[gregdeane]

@marlonbernardes Looks awesome man!