text: exports.seed = function (knex) {
      // Deletes ALL existing entries
      return knex('Slips').del()
          .then(function () {
              // Inserts seed entries
              return knex('Slips').insert([{
                      "slip": "N/A"
                  },
                  {
                      "slip": "Slip"
                  },
                  {
                      "slip": "Terra Sigillata"
                  }
              ]);
          });
  };
  