Some Espresso improvement

.pryrc

require File.expand_path('../base/boot', __FILE__)

database.rb

if Cfg.db[:type] && Cfg.db[:name]
  values = Cfg.db.values_at(:type, :user, :pass, :host, :name)
	if Cfg.db[:type] == 'sqlite'
	  values = [values.first, Cfg.root_path(values.last)]
	  connection_string = '%s://%s' % values
	else
		values = Cfg.db.values_at(:type, :user, :pass, :host, :name)
	  connection_string = '%s://%s:%s@%s/%s' % values
	end
  DataMapper.setup :default, connection_string
end