add documentation on how to set a database in aws and connect to it.

[costargc]

important commands

select * from mysql.user;

CREATE DATABASE database_name

create user 'username'@'%' identified by 'password';
grant all privileges on database_name.* to 'username'@'%' with grant option;
flush privileges;

--remember to change AWS database CIDR/IP - Inbound to aywhere 0.0.0.0/0