'\n' be parsed incorrectly in 'vimgolf setup'

[Pologue]

In the line of "\nPaste your VimGolf key:", the '\n' escape sequence is not correctly parsed.

Maybe it is because setup() in lib/vimgolf/cli.rb invokes VimGolf.ui.ask(aka Thor::Base.shell.ask) instead of VimGolf.ui.ask_question?