PJAX for Rails 3.1+

Integrate Chris Wanstrath's PJAX into Rails 3.1+ via the asset pipeline.

To activate, add this to your app/assets/javascripts/application.js (or whatever bundle you use):

//=require jquery.pjax

In previous versions of pjax_rails, most links would automatically use PJAX. However, this was found to be too inflexible; instead, the types of links you want to exhibit PJAX should be explicitly enabled:

# app/assets/javascripts/application.js

For this example, the PJAX container has to be marked with data-pjax-container attribute, so for example:

<body>
  <div>
    <!-- This will not be touched on PJAX updates -->
    <%= Time.now %>
  </div>

  <div data-pjax-container>
    <!-- PJAX updates will go here -->
    <%= content_tag :h3, 'My site' %>
    <%= link_to 'About me', about_me_path %>
    <!-- The following link will not be pjax'd -->
    <%= link_to 'Google', 'http://google.com', 'data-skip-pjax' => true %>
  </div>
</body>

FIXME: Currently the layout is hardcoded to "application". Need to delegate that to the specific layout of the controller.