title: Upgrade to ruby 2.0.0-p247 and rails 4.0.0
body: <p>I want to upgrade 2 apps to <strong>ruby 2.0.0-p247</strong> and <strong>rails 4.0.0</strong>.</p>
  
  <p>Upgrading from:<br>
  <strong>ruby 1.9.3</strong><br>
  <strong>rails 3.2.13</strong><br>
  I use RVM to manage rubies and gems.</p>
  
  <p>What I'm gonna do.</p>
  
  <p><strong>I. Upgrade ruby</strong><br>
  In terminal (from any dir):</p>
  
  <ol>
  <li><code>$ rvm install 2.0.0</code></li>
  <li><code>$ rvm --default use 2.0.0</code></li>
  <li><code>$ rvm gemset copy 1.9.3-p392@myBlog 2.0.0-p247@myBlog</code></li>
  </ol>
  
  <p>Do I need to do something else to update ruby for my apps? Or it's enough to finish the update?<br>
  P.S. I don't have <code>.ruby-version</code> file in app root directory.</p>
  
  <p><strong>II. Upgrade rails</strong><br>
  I'm gonna follow this cast: <a href="http://railscasts.com/episodes/415-upgrading-to-rails-4" rel="nofollow">http://railscasts.com/episodes/415-upgrading-to-rails-4</a><br>
  Any additional comments for these steps?</p>
  
  <p><strong>III. Deploy to production</strong><br>
  I'll change the ruby version for my projects via CP of my hosting.<br>
  And... <code>cap deploy</code></p>
  
  <p>Did I miss something? </p>