code: function addAnother(schema) {
  
      var config = {
          properties: {
              another: {
                  description: 'Add another collection? (y/n)'.magenta
              }
          }
      };
  
      prompt.start();
      prompt.message = ' > ';
      prompt.delimiter = '';
  
      return new Promise(function(resolve, reject) {
          prompt.get(config, function(err, result) {
  
              if (err) return reject(err);
  
              switch (result.another.toLowerCase()) {
                  case 'n':
                      return resolve({
                          answer: false,
                          schema: schema
                      });
                  case 'y':
                  default:
                      return resolve({
                          answer: true,
                          schema: schema
                      });
              }
          });
      });
  }
docs: Prompt to ask if another collection should be added to schema.
  @return {Promise}