automatically call .start()? about prompt

[QxQ]

Along the same alley, maybe make prompt a class?

So, the constructor of the class can call the start function
but this allows things like setting prompt.color to false to only effect one instance

example

Prompt = require('prompt');
prompt = new Prompt; // Prompt.start() is called doing the constructor, so it doesn't need to be called.
prompt.get(['stuff'], function (err, result){});

// And maybe for backward compatibility purposes, make this possible also.
Prompt.start() // This does need to be called since we're not making an instance.
Prompt.get(['stuff'], function(err, result){});