Trying to better mimic the original behaviour

Hi @arlimus, thanks for this inquirer port!! It's awesome.

I want to add some functionality! I already started working on and Input prompt...
But here there are a few improvements that I wanted to do to better mimic how the original inquirer.js library behaves.

For now is very simple, it just hides the cursor when waiting for input.
I hope to add more stuff soon. Tell me what do you think!