Create CODE_OF_CONDUCT.md
Create CODE_OF_CONDUCT.md

Looking at the project settings, I noticed a 'community' link and explored that. This seems like a good addition. Not sure of the contact email is the one we want to use.
fossamagna/liquibase,jimmycd/liquibase,jimmycd/liquibase,liquibase/liquibase,mattbertolini/liquibase,mattbertolini/liquibase,jimmycd/liquibase,liquibase/liquibase,liquibase/liquibase,mattbertolini/liquibase,fossamagna/liquibase,fossamagna/liquibase,jimmycd/liquibase,mattbertolini/liquibase