title: rainloop curl not downloading
body: <p>I'm trying to install <a href="https://www.rainloop.net/" rel="nofollow noreferrer">Rainloop</a> on my server.
  In the documentation its sayed to download rainloop via the curl command
  "curl -s <a href="https://repository.rainloop.net/installer.php" rel="nofollow noreferrer">https://repository.rainloop.net/installer.php</a> | php".
  When I enter this command nothing happens. And if I enter the command without the "-s" it only shows this:</p>
  
  <blockquote>
    <p>% Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                     Dload  Upload   Total   Spent    Left  Speed</p>
    
    <p>0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0</p>
  </blockquote>
  
  <p>It looks like the download won't even start. Since there is no error message I don't know what the error is.</p>
  
  <p>Some technical Infos:
  Ubuntu 16.04.2 LTS
  Lamp stack is installed
  Dovecot etc. also</p>
  
  <p>Thanks for possible replys.</p>