title: Error installing Grails with GVM - Curl issue
body: <p>I am having trouble installing Grails via GVM. I installed GVM via the instructions on <a href="http://gvmtool.net/" rel="nofollow" title="gvm's website">GVM's website</a>, and it appears it was installed correctly - restarting the terminal and running <code>gvm help</code> produces a list of possible commands. However, when I go to install Grails (or Groovy), I get the following output in the terminal:</p>
  
  <pre><code>$ gvm install grails
  
  Downloading: grails 2.3.2
  
    % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                   Dload  Upload   Total   Spent    Left  Speed
    0     0    0     0    0     0      0      0 --:--:-- --:--:-- --:--:--     0
  curl: (1) Protocol [http not supported or disabled in libcurl
    End-of-central-directory signature not found.  Either this file is not
    a zipfile, or it constitutes one disk of a multi-part archive.  In the
    latter case the central directory and zipfile comment will be found on
    the last disk(s) of this archive.
  unzip:  cannot find zipfile directory in one of /Users/neilpoulin/.gvm/archives/grails-    2.3.2.zip or
          /Users/neilpoulin/.gvm/archives/grails-2.3.2.zip.zip, and cannot find     /Users/neilpoulin/.gvm/archives/grails-2.3.2.zip.ZIP, period.
  
  Stop! The archive was corrupt and has been removed! Please try installing again.
  </code></pre>
  
  <p>I looked to make sure zip, unzip and curl were found:</p>
  
  <pre><code>    $ which zip
      /usr/bin/zip
  
      $ which unzip
      /usr/bin/unzip
  
      $ which curl
      /usr/bin/curl
  </code></pre>
  
  <p>Prior to this, the only thing I have done with Grails/Groovy is to execute the example project include on the Grails website - <a href="http://grails.org/learn" rel="nofollow">http://grails.org/learn</a> > step 2.</p>
  
  <p>What am I missing here? is there some configuration of <code>libcurl</code> I need to change? Any help is much appreciated! </p>