action_item deprecation warning.

[prasadsurase]

I am using active_admin(1.0.0.pre2) with active_admin_csv_import(1.3.1) in a rails 4.1 application. When using the DSL as

csv_importable :columns => [:name, :email, :password]

the warning displayed upon starting the server are:

WARN -- : DEPRECATION WARNING: Active Admin: using action_item without a name is deprecated! Use action_item(:edit).