Usage
=====
要 ActionController#current_user

rails g role_manager:install user
rake db:migrate

Example
=======

class User < ActiveRecord::Base
  acts_as_role
  include RoleMangerMethods
end

user = User.new
user.has_authority? :register #=> true/false

class FooController < ActionController::Base
  role_filter :destroy #=> 全アクション
  role_filter :register, :only => 'index' #=> indexアクションのみ
end

# Roleに対してFuncの権限を与える
r = RoleManager::Role.first
r.add_authority RoleManager::Function.first.code
r.save

# UserにRoleを与える
u.role = r
u.save