title: Where does bundler store gems?
body: <p>I know that when using <code>gem install</code>, the gem will be stored under /home/username/.rvm/gems/, under which gemset the gem was installed.</p>
  
  <p>But if I use Bundler and specify the gem in the Gemfile, when I run bundle install, where will those gems be stored? And what if I already installed the gem using <code>gem install</code>, if I run bundle install, will it use the previous gem installed using <code>gem install</code>?</p>