text: process.env.DATABASE_URL = process.env.DATABASE_URL || 'mongodb://127.0.0.1:27017/mern';
  process.env.NODE_ENV = process.env.NODE_ENV || 'development';
  process.env.PORT = process.env.PORT || 3000;
  process.env.SESSION_SECRET = process.env.SESSION_SECRET || 'mern';
  