title: Rails 3 can not find sqlite3-ruby
body: <p>I am trying to learn rails3.</p>
  
  <p>I tried folowing the installation guide from guides.rails.info, I installed</p>
  
  <p><code>sudo gem install  rake rack-test rack-mount erubis mail</code><br>
  <code>sudo gem install tzinfo builder i18n memcache-client</code><br>
  <code>sudo gem install text-format thor</code>  </p>
  
  <p>And rails 3 via </p>
  
  <p><code>sudo gem install rails --pre</code></p>
  
  <p>Now I create a new app</p>
  
  <p><code>rails abc</code></p>
  
  <p>And try </p>
  
  <p><code>rake db:create</code></p>
  
  <p>Which fails with </p>
  
  <p><code>Could not find gem 'sqlite3-ruby (&gt;= 0, runtime)' in any of the sources.</code></p>
  
  <p>So I try installing <code>sqlite3-ruby</code></p>
  
  <p><code>sudo gem install sqlite3-ruby</code></p>
  
  <p>Which fails with </p>
  
  <p><code>Could not create Makefile due to some reason, probably lack of
  necessary libraries and/or headers.  Check the mkmf.log file for more
  details.  You may need configuration options.</code></p>
  
  <p>So I install it via apt-get</p>
  
  <p><code>sudo aptitude install libsqlite3-ruby1.8</code>.</p>
  
  <p>And still get same error on <code>rake db:create</code>.</p>