text: //
  // This is a stub file for the 'Hello World' exercise. It's been provided as a
  // convenience to get you started writing code faster.
  // Make sure to look at hello-world.spec.js--that should give you some hints about what is
  // expected here.
  
  var HelloWorld = function () {};
  
  HelloWorld.prototype.hello = function (input) {
      return "Hello, World!";
  };
  
  module.exports = HelloWorld;
  