title: Ruby on Rails - "Add 'gem sqlite3'' to your Gemfile"
body: <p>I was following the Rails tutorial, but I got stuck when it said to type <code>rails server</code> in the blog directory. It states</p>
  <blockquote>
  <p>Specified 'sqlite3' for database adapter, but the gem is not loaded. Add <code>gem 'sqlite3'</code> to your Gemfile.</p>
  </blockquote>
  <p>I quit the server, installed sqlite3, reinstated the server, only to get this message again. sqlite3 doesn't show up when I do <code>gem list</code>, but I do see the folder in my Root Ruby directory.</p>
  <p>How can I fix this error?</p>
  <p>I'm using Ruby 2.0, Rails 4.0, sqlite3 1.3.7.</p>