Temporary fix for RuboCop bug until new RuboCop release.

[smalleel]

Temporary fix for issue #340 mentioned by @groddeck. This should be rolled back after the new version of RuboCop is released.

[groddeck]

Looks like 3 additional issues to address. From the Travis output:

Offenses:
Gemfile:17:18: C: Use the new Ruby 1.9 hash syntax.
  gem 'rubocop', :github => 'bbatsov/rubocop', :ref => '90bc9d4' 
                 ^^^^^^^^^^
Gemfile:17:48: C: Use the new Ruby 1.9 hash syntax.
  gem 'rubocop', :github => 'bbatsov/rubocop', :ref => '90bc9d4' 
                                               ^^^^^^^
lib/t/rcfile.rb:20:7: C: Use a guard clause instead of wrapping the code inside a conditional expression.
      if possibilities.size == 1
      ^^
33 files inspected, 3 offenses detected
RuboCop failed!

[sferik]

Ironically, this pull request introduces two new Rubocop issues:

Gemfile:17:18: C: Use the new Ruby 1.9 hash syntax.

[smalleel]

lgtm!

[smalleel]

Whoops, my mistake there! @sferik the change you posted for review looks good to me! Apologies for being a little new to the github workflow-- let me know if there's anything else I need to do to have your review commit merged into this branch.

[smalleel]

It looks like the new Rubocop release is out: https://github.com/bbatsov/rubocop/releases

I'll close this pull request since it shouldn't be needed any longer. :)