[DRE-maint] Bug#824907: ruby-reek: Fails to load library from main script

[Andrew Lee (=?UTF-8?Q?=E6=9D=8E=E5=81=A5=E7=A7=8B?=)]

Package: ruby-reek
Followup-For: Bug #824907

Thanks for reporting such issue. After replace require_relative with
relative paths with "require 'reek'" and such in bin/reek. I still
got:
    /usr/lib/ruby/2.3.0/rubygems/core_ext/kernel_require.rb:55:in
    `require': cannot load such file -- private_attr/everywhere
    (LoadError

Does this means it missing dependency on the private_attr gem?

Best regards,
-Andrew