Remove outdated documentation

[skip ci]

This is probably no longer needed now that we have the
`permit_params` dsl. However, it might still be useful if
people for some reason still want to use the older technique.

I would still probably remove the line, though, so as no to be
confusing.
update SASS variables so they can all be overridden

As reported in http://stackoverflow.com/questions/20575562
set up IRC notifications for Travis :octocat:
require Devise ~> 3.2
Add new devise translations to fr.yml
clearly require dependencies

activerecord-hackery/ransack#318
add `rake console`
i18n russian fix "translation data {:one=>"запись", :other=>"записей"} can not be used with :count => 2"