src/bin/brain-games.js
#!/usr/bin/env node
console.log('');
console.log('There are several games for brain training.\nCommands for running games in the terminal:');
console.log('$ brain-even');
console.log('$ brain-calc');
console.log('$ brain-gcd');
console.log('$ brain-progression');
console.log('$ brain-prime');
console.log('');