title: Bundler.require does not work for ActiveRecord in my gem
body: <p>I just created a new gem (using bundler) and want to add Active Record support. So I added <code>s.add_dependency "activerecord", "~&gt; 3.0"</code> to my gemspec. Then I use Bundler.setup and Bundler.require and thought that I have access to Active Record now, but I haven't. I have to explicitly use <code>require "active_record"</code>. Any idea why Bundler.require does not work for me in that case?</p>