text: exports.up = function(knex, Promise) {
      return knex.schema.table('auctions', function(t) {
          t.decimal('reserve').notNull().defaultTo(0);
      });
  };
  
  exports.down = function(knex, Promise) {
    return knex.schema.table('auctions', function(t) {
        t.dropColumn('reserve');
    })
  };