activerecord-hackery/ransack — pull request #362 by ryog (2014-04-21 14:23:08+00:00)
Title: Update README about format option

https://github.com/activerecord-hackery/ransack/pull/360
I wrote with reference to the following:
http://api.rubyonrails.org/classes/ActionView/Helpers/FormHelper.html#method-i-form_for