Very simple bluebird promise version of node's readline.
Error handling is incomplete, this is mostly for illustrative purposes.
See fpsokobanjs for an example how it is used.
console.log("Starting, please enter something");
readlineAsync()
.then( line => {
console.log("You said " + line);
return readlineAsync();
})
.then( line => {
console.log("and this " + line);
return "done";
})
.then(console.log);