title: install curl on ubuntu to use hirak/prestissimo with composer
body: <p>I try to installhirak/prestissimo packages because my composer is very very very slow. 
  I use </p>
  
  <pre><code>composer global require hirak/prestissimo
  </code></pre>
  
  <p>But I got this error. I found another solution on StackOverflow but I still can't fix that.</p>
  
  <pre><code>  Problem 1
      - Installation request for hirak/prestissimo ^0.3.6 -&gt; satisfiable by hirak/prestissimo[0.3.6].
      - hirak/prestissimo 0.3.6 requires ext-curl * -&gt; the requested PHP extension curl is missing from your system.
  
    To enable extensions, verify that they are enabled in your .ini files:
      - /etc/php/5.6/cli/php.ini
      - /etc/php/5.6/cli/conf.d/10-mysqlnd.ini
      - /etc/php/5.6/cli/conf.d/10-opcache.ini
      - /etc/php/5.6/cli/conf.d/10-pdo.ini
      - /etc/php/5.6/cli/conf.d/15-xml.ini
      - /etc/php/5.6/cli/conf.d/20-calendar.ini
      - /etc/php/5.6/cli/conf.d/20-ctype.ini
      - /etc/php/5.6/cli/conf.d/20-dom.ini
      - /etc/php/5.6/cli/conf.d/20-exif.ini
      - /etc/php/5.6/cli/conf.d/20-fileinfo.ini
      - /etc/php/5.6/cli/conf.d/20-ftp.ini
      - /etc/php/5.6/cli/conf.d/20-gd.ini
      - /etc/php/5.6/cli/conf.d/20-gettext.ini
      - /etc/php/5.6/cli/conf.d/20-iconv.ini
      - /etc/php/5.6/cli/conf.d/20-json.ini
      - /etc/php/5.6/cli/conf.d/20-mbstring.ini
      - /etc/php/5.6/cli/conf.d/20-mcrypt.ini
      - /etc/php/5.6/cli/conf.d/20-mysql.ini
      - /etc/php/5.6/cli/conf.d/20-mysqli.ini
      - /etc/php/5.6/cli/conf.d/20-pdo_mysql.ini
      - /etc/php/5.6/cli/conf.d/20-phar.ini
      - /etc/php/5.6/cli/conf.d/20-posix.ini
      - /etc/php/5.6/cli/conf.d/20-readline.ini
      - /etc/php/5.6/cli/conf.d/20-shmop.ini
      - /etc/php/5.6/cli/conf.d/20-simplexml.ini
      - /etc/php/5.6/cli/conf.d/20-sockets.ini
      - /etc/php/5.6/cli/conf.d/20-sysvmsg.ini
      - /etc/php/5.6/cli/conf.d/20-sysvsem.ini
      - /etc/php/5.6/cli/conf.d/20-sysvshm.ini
      - /etc/php/5.6/cli/conf.d/20-tokenizer.ini
      - /etc/php/5.6/cli/conf.d/20-wddx.ini
      - /etc/php/5.6/cli/conf.d/20-xmlreader.ini
      - /etc/php/5.6/cli/conf.d/20-xmlwriter.ini
      - /etc/php/5.6/cli/conf.d/20-xsl.ini
  </code></pre>
  
  <p>Thanks you all !! </p>