title: Could not find RubyGem bundler
body: <p>I've cloned diaspora for github, git://github.com/diaspora/diaspora.git</p>
  
  <p>I tried to install it. An error generated when I use bundle install. </p>
  
  <pre><code>$ bundle install 
  /usr/local/lib/site_ruby/1.8/rubygems.rb:812:in `report_activate_error': Could not find RubyGem bundler (&gt;= 0) (Gem::LoadError)
      from /usr/local/lib/site_ruby/1.8/rubygems.rb:223:in `activate'
      from /usr/local/lib/site_ruby/1.8/rubygems.rb:1146:in `gem'
      from /usr/bin/bundle:18
  </code></pre>
  
  <p>I'm using rails 3 and ruby 1.8 on ubuntu 11.04. How to fix it? Please help</p>