ArgumentError on setup with Hash

[nirnanaaa]

If I initialize GollumRails::Setup with the Hash method:

2.1.5 :001 > GollumRails::Setup.build(repository: "utils/wiki.git")
ArgumentError: When assigning attributes, you must pass a hash as an argument.
        from /home/fkasper/files/gollum_rails/lib/gollum_rails/setup.rb:31:in `build'
        from (irb):1
        from /home/fkasper/.rvm/rubies/ruby-2.1.5/bin/irb:11:in `<main>'

This is probably because of missing activesupport

[nirnanaaa]

missing active_support/core_ext/hash/keys include