code: function(callback) {
      var tableOptions = {
        'name': 'varchar',
        'ran_on': 'timestamp'
      };
      var constraints = {
        'primary_key': 'name'
      };
      return this.createTable(internals.migrationTable, tableOptions, constraints).nodeify(callback);
    }
docs: Creates a migration table for the current Cassnadra's keyspace
  @param callback