Simple testing automated publishing of GEM

TL;DR

• Fixed an issue where DROP SQL commands were going to replica
• Added some integration tests

What's Changed

• Add connection configuration specs by @lloydwatkin in #4
• Use Olio Rubocop styleguide by @lloydwatkin in #5
• Basic database connection + SQL execution tests by @lloydwatkin in #6

New Contributors

• @lloydwatkin made their first contribution in #4
• @erimicel made their first contribution in #3

Changelog

Full Changelog: v0.1.0...v0.8.0