title: Unable to download data from http://rubygems.org/
body: <p>I wanna export xlsx excel file using ruby in ROR so i'm install rubyXL. i use this command:
  sudo gem install rubyXL  --source <a href="http://rubygems.org" rel="noreferrer">http://rubygems.org</a> and then it have error like below</p>
  
  <pre><code>ERROR:  Could not find a valid gem 'rubyXL' (&gt;= 0), here is why:
            Unable to download data from http://rubygems.org/ - Errno::ETIMEDOUT: Connection timed out - connect(2) (http://rubygems.org/latest_specs.4.8.gz)
  </code></pre>
  
  <p>Please help me</p>