Custom text button and hide/not hide keyboard on submit

I've added a new feature to change the text of the button (it was a fixed string - "Send"). You can now set it with this function:

    [inputToolbar setLabel:@"Enviar"];

So you can localize it.

Another new feature is to disable (or enable) the automatic hiding of the keyboard after clicking the button. To do that, you can set to NO or YES the attribute hideKeyboardOnSubmit:

    inputToolbar.hideKeyboardOnSubmit = NO;