title: Telegram-cli argument --phone/-u not work
body: <p>I use the development of telegram-cli.
  I need at the first authorization to skip the question of "phone number"</p>
  
  <p>The argument does not help me, or I do not use it that way.</p>
  
  <pre><code>telegram-cli -k /etc/telegram-cli/tg-server.pub --phone +71110001100
  </code></pre>
  
  <p>What am I doing wrong?</p>
  
  <p><a href="https://github.com/vysheng/tg/wiki/Telegram-CLI-Arguments" rel="nofollow noreferrer">https://github.com/vysheng/tg/wiki/Telegram-CLI-Arguments</a></p>
  
  <p>without "plus" same problem</p>
  
  <pre><code>evgen@ovz3:~$ telegram-cli --phone 71110001100 -k /etc/telegram-cli/tg-server.pub
  Telegram-cli version 1.4.1, Copyright (C) 2013-2015 Vitaly Valtman
  Telegram-cli comes with ABSOLUTELY NO WARRANTY; for details type `show_license'.
  This is free software, and you are welcome to redistribute it
  under certain conditions; type `show_license' for details.
  Telegram-cli uses libtgl version 2.1.0
  Telegram-cli includes software developed by the OpenSSL Project
  for use in the OpenSSL Toolkit. (http://www.openssl.org/)
  I: config dir=[/home/evgen/.telegram-cli]
  phone number: 
  </code></pre>