text: var dbm = require('db-migrate');
  var type = dbm.dataType;
  
  exports.up = function(db, callback) {
    db.addColumn('ripple_transactions', 'state', {
      type: 'string',
      defaultValue: false
    }, callback);
  };
  
  exports.down = function(db, callback) {
    db.removeColumn('ripple_transactions', 'state', {
      type: 'string',
      defaultValue: false
    }, callback);
  };
  
  