def create_database_files
      username = builder.options['database-username']
      password = builder.options['database-password']

      builder.remove_file "config/database.yml"
      create_database_yml_file("config/database.sample.yml", "username", "pass")
      create_database_yml_file("config/database.yml", username, password)
    end
def create_database_files
      username = builder.options['database-username']
      password = builder.options['database-password']

      builder.remove_file "config/database.yml"
      create_database_yml_file("config/database.sample.yml", "username", "pass")
      create_database_yml_file("config/database.yml", username, password)
    end
create a new database.yml that works with PG.