title: Why is 'jQuery-Rails' often outside of the asset group
body: <p>Why is it that I often see <code>gem 'jquery-rails</code> outside of the <code>:assets</code> group?</p>
  
  <pre><code>group :assets do
    gem 'sass-rails', " ~&gt; 3.1.0"
    gem 'coffee-rails', " ~&gt; 3.1.0"
    gem 'uglifier'
  end
  
  gem 'jquery-rails'
  </code></pre>
  
  <p>Will there be buggy behavior if I put it inside?</p>
  
  <p>Thanks!</p>