title: using --http2.0 option with curl 7.33.0 gives unsupported protocol
body: <p>I am using centos 6.2, i needed to use curl --http2.0 in one of the server request, but i was having 7.19.6, after looking at <a href="http://curl.haxx.se/docs/manpage.html" rel="noreferrer">http://curl.haxx.se/docs/manpage.html</a> gives me that --http2.0 option is only supported with curl 7.33.0, so to overcome that problem, i have installed curl 7.33.0 by following the steps from <a href="http://www.linuxfromscratch.org/blfs/view/svn/basicnet/curl.html" rel="noreferrer">http://www.linuxfromscratch.org/blfs/view/svn/basicnet/curl.html</a>
   after installing curl, i have tried to use that, but it is still giving me the error as <strong>curl(1):unsupported protocol</strong>, i have checked my curl version by using: <strong>curl --version</strong> this is giving me :</p>
  
  <pre><code>curl 7.33.0 (x86_64-unknown-linux-gnu) libcurl/7.33.0 OpenSSL/1.0.0 zlib/1.2.3
  Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp smtp smtps telnet tftp 
  Features: AsynchDNS IPv6 Largefile NTLM NTLM_WB SSL libz 
  </code></pre>
  
  <p>I needed to use this --http2.0 but not getting anything that how i could do that?
  As curl 7.19 was installed and and i reinstalled curl with higher version, does this is making any problem?</p>