Gem rake file with bacon support

Rakefile

desc "Run all the tests"
task :default => [:test]

desc "Test"
task :test do
  output = 'SpecDoxOutput'
  Bacon.extend Bacon.const_get(output) rescue abort "No such formatter: #{output}"
  Bacon.summary_on_exit

  files = []
  files.concat Dir["test/**/test_*.rb"]
  files.concat Dir["test/**/spec_*.rb"]
  files.concat Dir["spec/**/spec_*.rb"]
  files.concat Dir["spec/**/*_spec.rb"]
  puts files
  files.each{ |file| load file }
end