def configure(env=:default, &block)
      environment = config_attributes[env.to_sym]

      Builder.new(environment, &block)
    end
def configure(env=:default, &block)
      environment = config_attributes[env.to_sym]

      Builder.new(environment, &block)
    end
Add or merge environment configuration

 Params:
 - env {Symbol} Environment to set (optional, default: :default)

 Yields: block with key-value definitions

 Returns: {Sequoia::Builder} builder instance