commented unwanted changes
Postgres integration with Travis CI. ref #186
Testing database configurations for travis postgres integration. ref #186
Deleted travis database config file for testing purpose.
Merge branch 't160_bag_pk_changes' into travis_postgres_integration
Test configs for postgresql db.
Merge pull request #187 from gwu-libraries/travis_postgres_integration

Travis postgres integration
Merge branch 't160_bag_pk_changes' into t175_bag_url_handling