[now-cli] Do not prompt for root directory when project is linked (#3737)
[now-cli] Do not prompt for root directory when project is linked (#3737)

* do not prompt for root directory when linked

* run tests

Co-authored-by: kodiakhq[bot] <9e05f530a4a0b74ddd685a36dedab9087faa4174@users.noreply.github.com>
Co-authored-by: Leo Lamprecht <9c1439a4748a4761a5954983b076bdd1e10a44c6@icloud.com>

zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli,zeit/now-cli