desc "Run all tests for rbgooey with rcov"
Spec::Rake::SpecTask.new('gui') do |t|
  t.spec_files = FileList['rbgooey/test/*.rb']
  t.rcov = true
  t.ruby_opts  ['--exclude', 'lib\/spec,bin\/spec']
end

rake aborted!
wrong number of arguments (1 for 0)