title: error when trying to install ruby gem gosu
body: <p>Unable to install gosu ruby gem.  When I try to run </p>
  
  <pre><code>gem install gosu
  </code></pre>
  
  <p>it throws this error:</p>
  
  <pre><code>Could not find a valid gem 'gosu' (&gt;= 0), here is why:
  Unable to download data from https://rubygems.org/ - SSL_connect returned=1 errno=0 state=SSLv2/v3 
  read server hello A: tlsv1 alert protocol version 
  (https://rubygems.org/latest_specs.4.8.gz)
  </code></pre>
  
  <p>How can I install this gem?</p>