Change password & username defaults in docs

[herkyl]

Right now Node.js's README writes:

var client = foo.bar({
  username: 'pksunkara',
  password: 'password'
});

Is it possible to change it to:

var client = foo.bar({
  username: 'api_key',
  password: 'api_secret'
});

[pksunkara]

@herkyl 'api_key' is not an username. I think you mean to say something else. Can you explain what exactly you want to do?