Setting setAutoDeriveColumnNames(true) in some kind of "global" level

[alexandremjacques]

Following the idea of having some kind of global configuration (issue #157), it would be also nice to set setAutoDeriveColumnNames on a more broad configuration (sql2o instance?).

Since DBs usually follows a naming convention (snake case, camel case, etc.), it is pretty boring (and error prone) to keep setting this on every createQuery.

Regards.

[neilgrover]

I created a merge request for this feature here #321