notifications: show how Kaui could be bundled as a JRuby plugin

More work is needed:

* Make Rails start faster (startup time is currently about 10')
* Ensure config/environments files are loaded
* Use native SSL support
* Fix the following error:

NameError: undefined local variable or method `config' for Jquery::Rails::Railtie:Class Railtie at
  classpath:/gemrepo/gems/jquery-rails-2.1.4/lib/jquery/rails/railtie.rb:7

Signed-off-by: Pierre-Alexandre Meyer <pierre@ning.com>