text: exports.up = knex => {
      return knex.schema.createTable('users', table => {
          table.increments('id').primary()
          table.string('email')
          table.string('username')
          table.timestamps(true, true)
      })
  }
  
  exports.down = knex => {
      return knex.schema.dropTableIfExists('users')
  }