https://www.lucidchart.com/invitations/accept/970f6965-93eb-4f86-bce1-954e0ef50733
https://drive.google.com/open?id=0B0kk9i817S_-ZW9RVC10cVFySlU
Mysql version >= 5.7.8 PHP >= 5.6.4
https://stripe.com/docs/testing