update rails to 4.0 release
Change controller generator template

Now it is more like the rails 4 controller template, using
before_(filter|action) to set the instance variable @resource and with
strong parameters.
Merge pull request #70 from MarceloCajueiro/updating_templates

Change controller generator template
Improve changelog [ci skip]
Add refactoring in the controller generator

Call `respond_to?(:before_action)` to `ActionController::Base` instead of
call it to `ApplicationController` avoiding ask to ApplicationController
if it is defined.

Kudos to @lucasmazza
Merge pull request #71 from MarceloCajueiro/refectoring_controller_generator

Add refactoring in the controller generator
Merge pull request #1 from plataformatec/master

rails4