title: Pushing Rails with SQLite3 to Heroku fails
body: <p>I experience the same scenario as described in <a href="http://www.ruby-forum.com/topic/217022" rel="nofollow noreferrer">Heroku deployment issue</a> when I try to deploy my Rails 3 app to Heroku and sqlite3 is defined in the gems file.</p>
  
  <blockquote>
    <p>/usr/ruby1.8.7/lib/ruby/gems/1.8/gems/bundler-1.0.0/lib/bundler/runtime.rb:64:in
    `require': no such file to load -- sqlite3 (LoadError)</p>
  </blockquote>
  
  <p>Any clue why this is? The solution defined in the ruby-forum works, I just wondered why.</p>